I've been using virtualbox for a while under oneiric and it hasn't had problems, so I do suspect this is a precise kernel issue. I ran stress for 40 minutes, and the machine was clearly working hard... The fans were going full. sensors at the end said:
$ sensors k10temp-pci-00c3 Adapter: PCI adapter temp1: +43.4°C (high = +70.0°C) No machine reboot though. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/926526 Title: Virtualbox reboots system after precise upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/926526/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs