Does it happen in other accounts on the system or just your main account?
I'm using ShapeShifter and am not seeing this. Is this on your iBook or your Quicksilver? Have you logged out/in? Restarted? Repaired permissions? "fsck -fy"ed?
LOL- it hasn't even been a month, and you've already jacked your system again.
hmm... never seen this, not in any Panther build... ShapeShifter can't be it, but maybe a theme? ... I'd try the 'other account' thingie and - sad as it sounds - a clean install/backup restoration thingie.