I am not quiet sure, if this Oops belongs to the mixer problem. It also could have been a problem with KVM/OSS, which happened at the same time (unfortunately :-) ). But as I said: Difficult to debug.
The only thing that I can say is that it must have to do with Audio, this can be - Kernel - ALSA (OSS emulation) - Pulseaudio - or the mixer applet itself. Because you have reassigned it to linux, I attach a kernel-bug-report file. -- [jaunty] mixer_applet2 freezes session https://bugs.launchpad.net/bugs/318310 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