Bug#655724: linux-image-3.1.0-1-amd64: the system described below is unstable with this kernel with selected processes hanging indefinitely
The lines you provided from /var/log/messages seem to come from
a kernel 'BUG' message, but are incomplete.
Please use the 'dmesg' command or a serial console or netconsole to
get the complete message. Also, please test whether this is fixed
in the current version in testing/unstable, which is 3.1.8-2.
We get into the habit of living before acquiring the habit of thinking.
- Albert Camus