Mine too, but now my Powerbook won't book!
I can get in with extensions off, but it seems to hang up on the Quicktime (disabled, X'd out) then nothing.
I've removed most of the Quciktime settings, but it just freezes buring boot on the one before.
The Quicktime installer won't run (Error -XX) to uninstall it!
Any help? I may be doing a system restore soon...