Index: applications/editors/josm/plugins/photo_geotagging/build.xml
===================================================================
--- applications/editors/josm/plugins/photo_geotagging/build.xml	(revision 23378)
+++ applications/editors/josm/plugins/photo_geotagging/build.xml	(revision 23379)
@@ -25,5 +25,5 @@
 
 	<!-- enter the SVN commit message -->
-	<property name="commit.message" value="update to josm latest; only recompile (setCancelButton)" />
+	<property name="commit.message" value="remember selection of mtime (save to preference file)" />
 	<!-- enter the *lowest* JOSM version this plugin is currently compatible with -->
 	<property name="plugin.main.version" value="3408" />
Index: applications/editors/josm/plugins/photo_geotagging/src/org/openstreetmap/josm/plugins/photo_geotagging/GeotaggingAction.java
===================================================================
--- applications/editors/josm/plugins/photo_geotagging/src/org/openstreetmap/josm/plugins/photo_geotagging/GeotaggingAction.java	(revision 23378)
+++ applications/editors/josm/plugins/photo_geotagging/src/org/openstreetmap/josm/plugins/photo_geotagging/GeotaggingAction.java	(revision 23379)
@@ -41,9 +41,11 @@
 
 /**
- * The action to aks the user for confirmation and then do the tagging.
+ * The action to ask the user for confirmation and then do the tagging.
  */
 class GeotaggingAction extends AbstractAction implements LayerAction {
     final static boolean debug = false;
     final static String KEEP_BACKUP = "plugins.photo_geotagging.keep_backup";
+    final static String CHANGE_MTIME = "plugins.photo_geotagging.change-mtime";
+    final static String MTIME_MODE = "plugins.photo_geotagging.mtime-mode";
     final static int MTIME_MODE_GPS = 1;
     final static int MTIME_MODE_PREVIOUS_VALUE = 2;
@@ -89,9 +91,19 @@
         settingsPanel.add(backups, GBC.eol().insets(3,3,0,0));
 
-        final JCheckBox setMTime = new JCheckBox(tr("change file modification time:"), false);
+        final JCheckBox setMTime = new JCheckBox(tr("change file modification time:"), Main.pref.getBoolean(CHANGE_MTIME, false));
         settingsPanel.add(setMTime, GBC.std().insets(3,3,5,3));
 
         final String[] mTimeModeArray = {"----", tr("to gps time"), tr("to previous value (unchanged mtime)")};
         final JComboBox mTimeMode = new JComboBox(mTimeModeArray);
+        {
+            String mTimeModePref = Main.pref.get(MTIME_MODE, null);
+            int mTimeIdx = 0;
+            if ("gps".equals(mTimeModePref)) {
+                mTimeIdx = 1;
+            } else if ("previous".equals(mTimeModePref)) {
+                mTimeIdx = 2;
+            }
+            mTimeMode.setSelectedIndex(setMTime.isSelected() ? mTimeIdx : 0);
+        }
         settingsPanel.add(mTimeMode, GBC.eol().insets(3,3,3,3));
 
@@ -126,5 +138,21 @@
 
         final boolean keep_backup = backups.isSelected();
+        final boolean change_mtime = setMTime.isSelected();
         Main.pref.put(KEEP_BACKUP, keep_backup);
+        Main.pref.put(CHANGE_MTIME, change_mtime);
+        if (change_mtime) {
+            String mTimeModePref;
+            switch (mTimeMode.getSelectedIndex()) {
+            case 1:
+                mTimeModePref = "gps";
+                break;
+            case 2:
+                mTimeModePref = "previous";
+                break;
+            default:
+                mTimeModePref = null;
+            }
+            Main.pref.put(MTIME_MODE, mTimeModePref);
+        }
 
         Main.worker.execute(new GeoTaggingRunnable(images, keep_backup, mTimeMode.getSelectedIndex()));