Index: trunk/src/org/openstreetmap/josm/gui/layer/GpxLayer.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/layer/GpxLayer.java	(revision 3234)
+++ trunk/src/org/openstreetmap/josm/gui/layer/GpxLayer.java	(revision 3235)
@@ -427,5 +427,5 @@
 
                     int diff = (int) (latest.time - earliest.time);
-                    info.append(" (" + (diff / 3600) + ":" + ((diff % 3600) / 60) + ")");
+                    info.append(String.format(" (%d:%02d)", diff / 3600, (diff % 3600) / 60));
                 }