This also happens to me. I assume it is related to the video drivers, though.
My reasoning for this is that 1) I can reproduce this bug not only in Firefox but also in Evince when scrolling through PDF files. 2) I can fix the issue like this: a) wait for the system to freeze b) press Ctrl+Alt+F1 (which is pretty much the only thing that works when the system is "frozen") c) wait about 5 seconds (required!!) d) then return to X with Ctrl+Alt+F7 ==> RESULT: the system resumes working normally My system: - Intel Core 2 duo, running 32-bit Ubuntu 9.04 - ATI Mobility Radeon x1300 running the open-source drivers - Compiz - Firefox 3.6.3 - Flash non-free 10.1 -- Autoscroll in Firefox can freeze these at once: Firefox, keyboard, mouse, and possibly other things https://bugs.launchpad.net/bugs/566412 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs