Firefox mouseover tooltips not working

[LoneWolf121188]

I've been having this problem in 3.5 and 3.6...any time I mouse over text or an image that has a tooltip (the little yellow text box), I just get a blank yellow box. Take xkcd, for example. The main comic (image) always pops up a text box. But all I see is a small blank box, like it's displaying a space or something. Any ideas what's wrong?

 

[Barty Fartslast]

Anyone? I'm having exactly the same problem. In Firefox, when I hover over something that should have a tooltip, I just get a tiny yellow box that is empty...

 

[LPZ]

Do you have Google Toolbar installed? If so, uninstall and reinstall it.