Weird Firefox issue?

[vohdoun]

Been searching but so far I can't seem to find what this weird issue would be called.
What would happen is Firefox with another FF window open, drag it or move it to another part on the screen, then it would snap back to where the first window is. Most times I can reproduce this problem, but its friggin annoying!

Anybody had such thing like this with Firefox? and how to rectify it. Its a PPC build, the latest 1.5.0.4.

The only extensions installed:
Adblock Plus, which I've had it disabled for a while now.
Tab X
CookieCuller
Download Manager Tweak

 

[lamemodem]

Weird Firefox issue?

I had the same problem when I tried out Firefox. I posted a message on here, but no one offered any help or solution. I finally gave up and went with Camino.