Index: trunk/src/org/openstreetmap/josm/gui/preferences/PreferenceTabbedPane.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/preferences/PreferenceTabbedPane.java	(revision 19334)
+++ trunk/src/org/openstreetmap/josm/gui/preferences/PreferenceTabbedPane.java	(revision 19335)
@@ -140,9 +140,10 @@
                 }
             } else if (task != null && !task.isCanceled()) {
+                Collection<PluginInformation> failed = task.getFailedPlugins();
                 JOptionPane.showMessageDialog(
                         MainApplication.getMainFrame(),
                         sb.toString(),
-                        tr("Warning"),
-                        JOptionPane.WARNING_MESSAGE
+                        !failed.isEmpty() ? tr("Warning") : tr("Information"),
+                        !failed.isEmpty() ? JOptionPane.WARNING_MESSAGE : JOptionPane.INFORMATION_MESSAGE
                         );
             }