Index: /trunk/src/org/openstreetmap/josm/gui/ExtendedDialog.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/ExtendedDialog.java	(revision 3403)
+++ /trunk/src/org/openstreetmap/josm/gui/ExtendedDialog.java	(revision 3404)
@@ -321,4 +321,5 @@
             gc.insets = new Insets(10,10,10,10);
             gc.anchor = GridBagConstraints.NORTH;
+            gc.weighty = 1.0;
             cp.add(iconLbl, gc);
             gc.anchor = GridBagConstraints.CENTER;
@@ -328,8 +329,12 @@
         gc.fill = GridBagConstraints.BOTH;
         gc.insets = contentInsets;
+        gc.weightx = 1.0;
+        gc.weighty = 1.0;
         cp.add(content, gc);
 
         gc.fill = GridBagConstraints.NONE;
         gc.gridwidth = GridBagConstraints.REMAINDER;
+        gc.weightx = 0.0;
+        gc.weighty = 0.0;
 
         if (toggleable) {