Binary package hint: compiz
I fresh-installe karmic amd64 and fusion icon to load at start-up. Then i installed advanced compiz config manager and right clicked in fusion icon to reload manager in order to refresh fusion icon entries and have acces to settings manager. When reload window manager I noticed that none of gnome-panels was displayed... scale plugins and window management was ok, every fine but no gnome-panels... i moved the mouse over the suspected position of panels and info boxes appeared and i also could click in calendar and calendar was shown... but not gnome-panels... i have to click and right click several times in gnome-panel and suddenly panels appeared.... but was very difficult and took very long time.... see the screenshots.
Thanks for the report, it has been some time without any response or feedback in this bug report and we are wondering if this is still an issue for you with the latest release of Ubuntu the Natty Narwhal, May you please test with that version and comment back if you're still having or not the issue? Please have a look at http://