I did not notice apport ever appearing when gnome-panel was running. However, after installing gnome-panel-dbgsym, apport appeared when I attempted to reproduce the problem. So, you will find the generated information in bug #96064:
https://bugs.launchpad.net/ubuntu/+source/gnome-panel/+bug/96064 -- Run Application on 20070319.1 seems to refresh Gnome https://launchpad.net/bugs/94433 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
