Like dcwandj, I've just been hit with this problem and I'm using the latest Ubuntu 9.1 (2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12 05:23:09 UTC 2010). It may or may not be relevant that the problem appeared shortly after I had a system crash.
Like dcwandj, I've just been hit with this problem and I'm using the latest Ubuntu 9.1 (2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12 05:23:09 UTC 2010). It may or may not be relevant that the problem appeared shortly after I had a system crash.