diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5e6abd6c3..fa3159344 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -118,7 +118,7 @@ endif (WITH_RAWZOR)
 
 find_package(OpenMP)
 if (OPENMP_FOUND)
-	set(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS})
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
 endif (OPENMP_FOUND)
 
 add_subdirectory (rtexif)
diff --git a/COMPILE.txt b/COMPILE.txt
index 2de32e52c..3eabff19a 100644
--- a/COMPILE.txt
+++ b/COMPILE.txt
@@ -47,11 +47,11 @@ Requirements:
 - MacPorts
   - Set /opt/local/etc/macports/variants.conf to include "+universal +no_x11 +quartz"  (NOTE: as of this writing the Pango and Pango-devel ports are broken and will not build as Universal variants.  Until this is fixed, leave the universal flag off.)
   - Set /opt/local/etc/macports/macports.conf key 'universal_archs' to "i386 x86_64"
-  - Run "sudo port install cairomm pango-devel gtk2 cmake glibmm gtkmm lcms libiptcdata mercurial" to install all needed libraries and tools
+  - Run "sudo port install cairomm pango-devel gtk2 cmake glibmm gtkmm lcms libiptcdata gcc45 mercurial" to install all needed libraries and tools
 
 Compile:
 - Enter root directory of RawTherapee source tree
-- Type: cmake .
+- Type: cmake -D CMAKE_C_COMPILER=gcc-mp-4.5 -D CMAKE_CXX_COMPILER=g++-mp-4.5 .
 - Type: make install
 - Type: ./tools/osx/make-app-bundle
 - You will find a RawTherapee.dmg file in release/ folder; this is the distribution release and can be run on any 10.5 or 10.6 Intel machine.
diff --git a/rtdata/languages/Nederlands b/rtdata/languages/Nederlands
index 17d023074..72285642e 100644
--- a/rtdata/languages/Nederlands
+++ b/rtdata/languages/Nederlands
@@ -20,6 +20,8 @@
 # 26.12.2007: door Rens Duijsens en Brent Huisman
 # 14.03.2008: updated by reggybe
 # 01.02.2009: updated to RT2.4-RC by paul.matthijsse
+# 02-05-2010: updated to rt3a1 by paul.matthijsse
+
 ADJUSTER_RESET_TO_DEFAULT;Terug naar beginwaarde
 CURVEEDITOR_FILEDLGFILTERANY;Alle bestanden
 CURVEEDITOR_FILEDLGFILTERCURVE;Curvebestanden
@@ -94,9 +96,9 @@ FILEBROWSER_SHOWRANK4HINT;Toon foto's met 4 sterren waardering
 FILEBROWSER_SHOWRANK5HINT;Toon foto's met 5 sterren waardering
 FILEBROWSER_SHOWTRASHHINT;Toon inhoud prullenbak
 FILEBROWSER_SHOWUNRANKHINT;Toon foto's zonder sterwaardering
-FILEBROWSER_STARTPROCESSINGHINT;Start verwerking/bewaren van bestanden in verwerkingsrij
+FILEBROWSER_STARTPROCESSINGHINT;Start verwerking van bestanden in verwerkingsrij
 FILEBROWSER_STARTPROCESSING;Start verwerking
-FILEBROWSER_STOPPROCESSINGHINT;Stop verwerking van foto's in verwerkingsrij
+FILEBROWSER_STOPPROCESSINGHINT;Stop verwerking van bestanden in verwerkingsrij
 FILEBROWSER_STOPPROCESSING;Stop verwerking
 FILEBROWSER_THUMBSIZE;Miniaturen
 FILEBROWSER_ZOOMINHINT;Groter
@@ -199,11 +201,11 @@ HISTORY_MSG_74;Schalingsinstelling
 HISTORY_MSG_75;Schalingsmethode
 HISTORY_MSG_76;Exif-metadata
 HISTORY_MSG_77;IPTC-metadata
-HISTORY_MSG_78;Data specified for resize
-HISTORY_MSG_79;Resize width
+HISTORY_MSG_78;Schalen
+HISTORY_MSG_79;Schalen: breedte
 HISTORY_MSG_7;Schaduwen versterken
-HISTORY_MSG_80;Resize height
-HISTORY_MSG_81;Resize enabled
+HISTORY_MSG_80;Schalen: hoogte
+HISTORY_MSG_81;Schalen geactiveerd
 HISTORY_MSG_8;Belichtingscompensatie
 HISTORY_MSG_9;Compressie hoge lichten
 HISTORY_NEWSNAPSHOTAS;Als...
@@ -269,38 +271,38 @@ IPTCPANEL_TITLEHINT;Een korte referentienaam voor de foto (Objectnaam)
 IPTCPANEL_TITLE;Titel
 IPTCPANEL_TRANSREFERENCEHINT;Een code die de locatie van de oorspronkelijke transmissie representeert (Original Transmission Reference)
 IPTCPANEL_TRANSREFERENCE;Trans. Reference
-MAIN_BUTTON_EXIT;Exit
+MAIN_BUTTON_EXIT;Afsluiten
 MAIN_BUTTON_PREFERENCES;Voorkeuren
-MAIN_BUTTON_QUEUE;Put to queue
+MAIN_BUTTON_QUEUE;Plaats in verwerkingsrij
 MAIN_BUTTON_SAVEAS;Als...
 MAIN_BUTTON_SAVE;Bewaar foto
 MAIN_BUTTON_SENDTOEDITOR;Stuur naar fotoprogramma
-MAIN_FRAME_BATCHQUEUE;Batch Queue 
-MAIN_FRAME_FILEBROWSER;File Browser 
-MAIN_FRAME_PLACES_ADD;Add
-MAIN_FRAME_PLACES_DEL;Del
-MAIN_FRAME_PLACES;Places 
-MAIN_FRAME_RECENT;Recent Folders 
+MAIN_FRAME_BATCHQUEUE;Verwerkingsrij 
+MAIN_FRAME_FILEBROWSER;Bestandsnavigator 
+MAIN_FRAME_PLACES_ADD;Nieuw
+MAIN_FRAME_PLACES_DEL;Wis
+MAIN_FRAME_PLACES;Locaties
+MAIN_FRAME_RECENT;Recente mappen 
 MAIN_MSG_ALREADYEXISTS;Bestand bestaat reeds.
 MAIN_MSG_CANNOTLOAD;Fout bij laden
 MAIN_MSG_CANNOTSAVE;Fout bij opslaan van de afbeelding
 MAIN_MSG_CANNOTSTARTEDITOR;Kan fotoprogramma niet starten. 
 MAIN_MSG_CANNOTSTARTEDITOR_SECONDARY;Geef juiste pad op in 'Voorkeuren'.
 MAIN_MSG_EXITJOBSINQUEUEINFO;Foto's in de verwerkingsrij zullen niet verwerkt worden bij afsluiten.
-MAIN_MSG_EXITJOBSINQUEUEQUEST;Weet u zeker dat u wilt stoppen? De verwerkingsrij bevat onverwerkte foto's.
+MAIN_MSG_EXITJOBSINQUEUEQUEST;Weet u zeker dat u wilt stoppen? De verwerkingsrij bevat nog foto's.
 MAIN_MSG_JOBSINQUEUE;Bewerking(en) in de wachtrij
 MAIN_MSG_QOVERWRITE;Wilt u het bestand overschrijven?
 MAIN_TAB_BASIC;Grondwaarde
 MAIN_TAB_COLOR;Kleur
 MAIN_TAB_DETAIL;Detail
-MAIN_TAB_DEVELOP;Develop
+MAIN_TAB_DEVELOP;Ontwikkel
 MAIN_TAB_EXIF;Exif
 MAIN_TAB_EXPOSURE;Belichting
 MAIN_TAB_FILTER;Filter
 MAIN_TAB_ICM;ICM
 MAIN_TAB_IPTC;IPTC
 MAIN_TAB_METADATA;Metadata
-MAIN_TAB_TAGGING;Tagging
+MAIN_TAB_TAGGING;Tags
 MAIN_TAB_TRANSFORM;Transformeer
 MAIN_TOOLTIP_HIDEFP;Toon/verberg onderpaneel (bestandsnavigator, sneltoets F)
 MAIN_TOOLTIP_HIDEHP;Toon/verberg linkerpaneel (geschiedenis, sneltoets H)
@@ -482,7 +484,7 @@ TP_COLORBOOST_ACHANNEL;Kanaal A
 TP_COLORBOOST_AMOUNT;Hoeveelheid
 TP_COLORBOOST_AVOIDCOLORCLIP;Vermijd kleuroversturing
 TP_COLORBOOST_BCHANNEL;Kanaal B
-TP_COLORBOOST_CHAB;a & b
+TP_COLORBOOST_CHAB;A & B
 TP_COLORBOOST_CHANNEL;Kanaal
 TP_COLORBOOST_CHSEPARATE;Scheiden
 TP_COLORBOOST_ENABLESATLIMITER;Activeer verzadigingsbegrenzer
@@ -610,81 +612,70 @@ ZOOMBAR_PREVIEW;Afbeelding
 ZOOMBAR_SCALE;Schaal
 ZOOMBAR_SMALL;Klein
 
-GENERAL_HIGH_QUALITY;High Quality
-GENERAL_UNCHANGED;(Unchanged)
-MAIN_MSG_PLACES;Places
-GENERAL_BEFORE;Before
-GENERAL_AFTER;After
-MAIN_TOOLTIP_TOGGLE;Toggle before/after view
-MAIN_BUTTON_PUTTOQUEUE;Put to queue
+GENERAL_HIGH_QUALITY;Hoge kwaliteit
+GENERAL_UNCHANGED;(Onveranderd)
+MAIN_MSG_PLACES;Locaties
+GENERAL_BEFORE;Voor
+GENERAL_AFTER;Na
+MAIN_TOOLTIP_TOGGLE;Vergelijk origineel en bewerking
+MAIN_BUTTON_PUTTOQUEUE;Plaats in verwerkingsrij
 MAIN_MSG_NAVIGATOR;Navigator
-FILEBROWSER_TOOLTIP_STOPPROCESSING;Start processing automatically when a new job arrives
-BATCHQUEUE_AUTOSTART;Auto start
-TP_DETAIL_AMOUNT;Amount
-TP_RESIZE_SPECIFY;Specify:
-TP_RESIZE_SCALE;Scale
-TP_RESIZE_WIDTH;Width
-TP_RESIZE_HEIGHT;Height
-MAIN_TOGGLE_BEFORE_AFTER;B|A
+FILEBROWSER_TOOLTIP_STOPPROCESSING;Start verwerking automatisch wanneer nieuwe foto arriveert
+BATCHQUEUE_AUTOSTART;Autostart
+TP_DETAIL_AMOUNT;Hoeveelheid
+TP_RESIZE_SPECIFY;Specificeer:
+TP_RESIZE_SCALE;Schaal
+TP_RESIZE_WIDTH;Breedte
+TP_RESIZE_HEIGHT;Hoogte
+MAIN_TOGGLE_BEFORE_AFTER;V-N
 
-
-###
-
-###
-
-EXIFFILTER_METADATAFILTER;Enable Metadata Filters
-CURVEEDITOR_PARAMETRIC;Parametric
-CURVEEDITOR_CUSTOM;Custom
+EXIFFILTER_METADATAFILTER;Activeer metadatafilters
+CURVEEDITOR_PARAMETRIC;Parametrisch
+CURVEEDITOR_CUSTOM;Handmatig
 CURVEEDITOR_TYPE;Type:
-CURVEEDITOR_HIGHLIGHTS;Highlights
-CURVEEDITOR_LIGHTS;Lights
-CURVEEDITOR_DARKS;Darks
-CURVEEDITOR_SHADOWS;Shadows
-BATCH_PROCESSING;batch processing
-PREFERENCES_BATCH_PROCESSING;batch processing
-PREFERENCES_BEHAVIOR;Behavior
-PREFERENCES_PROPERTY;Property
-PREFERENCES_ADD;ADD
-PREFERENCES_SET;SET
-PROGRESSDLG_PROFILECHANGEDINBROWSER;Profile changed in browser
-MAIN_MSG_ERRORDURINGIMAGESAVING;Error during image saving
-FILEBROWSER_CURRENT_NAME;Current name:
-FILEBROWSER_NEW_NAME;New name:
-FILEBROWSER_USETEMPLATE;Use template:
-FILEBROWSER_ADDDELTEMPLATE;Add/Del templates...
-ZOOMPANEL_ZOOMIN;Zoom In
-ZOOMPANEL_ZOOMOUT;Zoom Out
-ZOOMPANEL_ZOOM100;Zoom to 100%
-ZOOMPANEL_ZOOMFITSCREEN;Fit to screen
-ZOOMPANEL_NEWCROPWINDOW;Open (new) detail window
-ZOOMPANEL_100;(100%)
+CURVEEDITOR_HIGHLIGHTS;Hoge lichten
+CURVEEDITOR_LIGHTS;Lichten
+CURVEEDITOR_DARKS;Schaduwen
+CURVEEDITOR_SHADOWS;Diepe schaduwen
+BATCH_PROCESSING;Batch-verwerking
+PREFERENCES_BATCH_PROCESSING;Batch-verwerking
+PREFERENCES_BEHAVIOR;Gedrag
+PREFERENCES_PROPERTY;Eigenschap
+PREFERENCES_ADD;Voeg toe
+PREFERENCES_SET;Activeer
+PROGRESSDLG_PROFILECHANGEDINBROWSER;Profiel veranderd in bestandsnavigator
+MAIN_MSG_ERRORDURINGIMAGESAVING;Fout tijdens opslaan foto
+FILEBROWSER_CURRENT_NAME;Huidige naam:
+FILEBROWSER_NEW_NAME;Nieuwe naam:
+FILEBROWSER_USETEMPLATE;Gebruik sjabloon:
+FILEBROWSER_ADDDELTEMPLATE;Voeg sjablonen toe of verwijder...
+ZOOMPANEL_ZOOMIN;Zoom in
+ZOOMPANEL_ZOOMOUT;Zoom uit
+ZOOMPANEL_ZOOM100;Zoom naar 100%
+ZOOMPANEL_ZOOMFITSCREEN;Passend in venster
+ZOOMPANEL_NEWCROPWINDOW;Open (nieuw) detailvenster
+ZOOMPANEL_100;(100%)
 
-###
+MAIN_BUTTON_FULLSCREEN;Volledig scherm
+MAIN_BUTTON_UNFULLSCREEN;Verlaat volledig scherm
+PREFERENCES_OVERLAY_FILENAMES;Toon bestandsnamen over miniaturen
 
-MAIN_BUTTON_FULLSCREEN;Fullscreen
-MAIN_BUTTON_UNFULLSCREEN;Exit fullscreen
-PREFERENCES_OVERLAY_FILENAMES;Overlay filenames on thumbnails
-
-NAVIGATOR_R_NA;R = n/a
-NAVIGATOR_G_NA;G = n/a
-NAVIGATOR_B_NA;B = n/a
-NAVIGATOR_H_NA;H = n/a
-NAVIGATOR_S_NA;S = n/a
-NAVIGATOR_V_NA;V = n/a
+NAVIGATOR_R_NA;R = n/b
+NAVIGATOR_G_NA;G = n/b
+NAVIGATOR_B_NA;B = n/b
+NAVIGATOR_H_NA;H = n/b
+NAVIGATOR_S_NA;S = n/b
+NAVIGATOR_V_NA;V = n/b
 NAVIGATOR_R_VALUE;R = %1
 NAVIGATOR_G_VALUE;G = %1
 NAVIGATOR_B_VALUE;B = %1
 NAVIGATOR_H_VALUE;H = %1
 NAVIGATOR_S_VALUE;S = %1
 NAVIGATOR_V_VALUE;V = %1
-NAVIGATOR_XY_NA;x = n/a, y = n/a
-FILEBROWSER_SHOWEXIFINFO;Show EXIF info
-TP_RESIZE_DOWNSCALEB;Downscale (Better)
-TP_RESIZE_DOWNSCALEF;Downscale (Faster)
-SAVEDLG_TIFFUNCOMPRESSED;Uncompressed TIFF
-HISTOGRAM_BUTTON_R;R
-HISTOGRAM_BUTTON_G;G
-HISTOGRAM_BUTTON_B;B
-HISTOGRAM_BUTTON_L;L
-PREFERENCES_DCBENHANCE;Apply DCB enhancement step
-PREFERENCES_DCBITERATIONS;Number of DCB iterations
+NAVIGATOR_XY_NA;x = n/b, y = n/b
+FILEBROWSER_SHOWEXIFINFO;Toon EXIF-info
+TP_RESIZE_DOWNSCALEB;Neerschalen (beter)
+TP_RESIZE_DOWNSCALEF;Neerschalen (sneller)
+SAVEDLG_TIFFUNCOMPRESSED;Geen compressie
+PREFERENCES_DCBENHANCE;Pas DCB-verbetering toe
+PREFERENCES_DCBITERATIONS;Aantal DCB-herhalingen
diff --git a/rtgui/filebrowser.cc b/rtgui/filebrowser.cc
index c43e70d2d..dcd8823b5 100644
--- a/rtgui/filebrowser.cc
+++ b/rtgui/filebrowser.cc
@@ -470,6 +470,7 @@ void FileBrowser::rankingRequested (std::vector<FileBrowserEntry*> tbe, int rank
 
     for (int i=0; i<tbe.size(); i++) {
         tbe[i]->thumbnail->setRank (rank);
+        tbe[i]->thumbnail->updateCache(); // needed to save the rank to disk
         if (tbe[i]->getThumbButtonSet())
                 tbe[i]->getThumbButtonSet()->setRank (tbe[i]->thumbnail->getRank());
     }
diff --git a/rtgui/filecatalog.cc b/rtgui/filecatalog.cc
index c29f0c436..b59b195c4 100644
--- a/rtgui/filecatalog.cc
+++ b/rtgui/filecatalog.cc
@@ -97,6 +97,7 @@ FileCatalog::FileCatalog (CoarsePanel* cp, ToolBar* tb) : listener(NULL), fslist
         bRank[i]->set_relief (Gtk::RELIEF_NONE);
         buttonBar->pack_start (*bRank[i], Gtk::PACK_SHRINK);
         bCateg[i+2] = bRank[i]->signal_toggled().connect (sigc::bind(sigc::mem_fun(*this, &FileCatalog::categoryButtonToggled), bRank[i]));    
+        bRank[i]->signal_button_press_event().connect (sigc::mem_fun(*this, &FileCatalog::capture_event),false);
     }  
     bRank[0]->set_tooltip_text (M("FILEBROWSER_SHOWRANK1HINT"));
     bRank[1]->set_tooltip_text (M("FILEBROWSER_SHOWRANK2HINT"));
@@ -182,6 +183,12 @@ FileCatalog::FileCatalog (CoarsePanel* cp, ToolBar* tb) : listener(NULL), fslist
 #endif
 }
 
+bool FileCatalog::capture_event(GdkEventButton* event){
+    // need to record modifiers on the button press, because signal_toggled does not pass the event.
+    modifierKey = event->state;
+    return false;
+}
+
 void FileCatalog::exifInfoButtonToggled()
 {
    options.showFileNames =  exifInfo->get_active();
@@ -584,27 +591,74 @@ void FileCatalog::renameRequested  (std::vector<FileBrowserEntry*> tbe) {
 }
 
 void FileCatalog::categoryButtonToggled (Gtk::ToggleButton* b) {
-
+    
     for (int i=0; i<8; i++)
         bCateg[i].block (true);
 
     fileBrowser->getScrollPosition (hScrollPos[lastScrollPos], vScrollPos[lastScrollPos]);
-
-    // seek the one pressed
-    for (int i=0; i<8; i++) {
-        categoryButtons[i]->set_active (categoryButtons[i]==b);
-        if (categoryButtons[i]==b)
-            lastScrollPos = i;
+    
+    //find the number of the button
+    int toggled_button = 0;
+    for (int i=0; i<8; i++){
+        if(categoryButtons[i]==b){
+            toggled_button = i;
+        }
     }
-       
-    // change the images of the buttons to reflect current ranking
-    for (int i=0; i<5; i++) 
-        bRank[i]->set_image (*igranked[i]);
-    for (int i=0; i<5; i++)
-        if (b==bRank[i]) 
-            for (int j=0; j<=i; j++)
-                bRank[j]->set_image (*iranked[j]);               
-
+    
+    //was control key pressed
+    bool control_down = modifierKey & GDK_CONTROL_MASK;
+    
+    // for a normal switch, untoggle the other buttons
+    if (!control_down || toggled_button==0 || toggled_button==7){
+        for (int i=0; i<8; i++) {
+            categoryButtons[i]->set_active (i==toggled_button);
+        }
+    }else{
+        // but if we have control clicked a star we need to untoggle non-stars
+        categoryButtons[0]->set_active(false);
+        categoryButtons[1]->set_active(false);
+        categoryButtons[7]->set_active(false);
+    }
+    
+    // how we color the buttons depends on how many are selected
+    int toggled_count = 0;
+    for (int i=0; i<8; i++) {
+        if (categoryButtons[i]->get_active())
+            toggled_count ++;
+    }
+    
+    // if we have untoggled all the buttons, set to show all
+    if (toggled_count == 0){
+        toggled_button = 0;
+        categoryButtons[0]->set_active(true);
+    }
+    
+    // so set the right images
+    if (toggled_count == 1){
+        int n_stars = 0;
+        // only one button is active, find out which
+        // if its not a star button, then n_stars stays on zero
+        for (int i=0; i<5; i++){
+            if (bRank[i]->get_active())
+                n_stars = i+1;
+        }
+        // color up to the correct rank
+        for (int i=0; i<5; i++){
+            if (i<n_stars)
+                bRank[i]->set_image (*iranked[i]);
+            else
+                bRank[i]->set_image (*igranked[i]);
+        }
+    }else{
+        // if several stars are selected, color them
+        for (int i=0; i<5; i++){
+            if (bRank[i]->get_active())
+                bRank[i]->set_image (*iranked[i]);
+            else
+                bRank[i]->set_image (*igranked[i]);
+        }
+    }
+    
     fileBrowser->applyFilter (getFilter ());
 
     // rearrange panels according to the selected filter
diff --git a/rtgui/filecatalog.h b/rtgui/filecatalog.h
index 73b5ff8e2..80f752203 100644
--- a/rtgui/filecatalog.h
+++ b/rtgui/filecatalog.h
@@ -132,6 +132,7 @@ class FileCatalog : public Gtk::VBox,
 #endif		
         std::vector<Glib::ustring> fileNameList;
         std::set<Glib::ustring> editedFiles;
+        guint modifierKey; // any modifiers held when rank button was pressed
 
         void addAndOpenFile (const Glib::ustring& fname);
         void checkAndAddFile (Glib::RefPtr<Gio::File> info);
@@ -177,6 +178,7 @@ class FileCatalog : public Gtk::VBox,
 				void setFilterPanel (FilterPanel* fpanel);
 				void exifInfoButtonToggled();
                 void categoryButtonToggled (Gtk::ToggleButton* b);
+                bool capture_event(GdkEventButton* event);
                 void filterChanged ();
                 void runFilterDialog ();