It just happened to me, running 2.6.32-24-generic on Lucid. I really don't know how to reproduce it, I wasn't doing anything fancy. As other said, the system was completely unresponsive, but it still replied to pings from another machine.
-- [i945g] karmic: INFO: task i915/* blocked for more than 120 seconds. https://bugs.launchpad.net/bugs/451518 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