Comment 3 for bug 530044

The same issue also appeared on a colleague's Ubuntu 9.10 installation.
He noticed some errors in /var/log/messages that may be related to this and I also found the following messages in my machine's log file:

Mar 1 15:31:34 l3bz510 kernel: [ 8311.291902] gnome-screensav[8315]: segfault at 0 ip b6587185 sp b64a2de0 error 6 in pam_lsass.so[b6584000+8000]
Mar 1 15:31:46 l3bz510 kernel: [ 8323.840147] gnome-screensav[8378]: segfault at 0 ip b649e185 sp b63b9de0 error 6 in pam_lsass.so[b649b000+8000]
Mar 1 15:35:25 l3bz510 kernel: [ 8542.274933] gnome-screensav[8965]: segfault at 0 ip b65b5185 sp b64d0de0 error 6 in pam_lsass.so[b65b2000+8000]

Could the problem be related to MS ActiveDirectory authentication and Likewise?

The issue appeared all of a sudden on my computer and persisted for more than two weeks until it disappeared about two days ago. I did boot the system several times during that period.

I don't know if this is related but our MS Exchange email server started to issue password expiration reminder notices to me a few weeks ago. I changed my the password earlier this week and it was after that at some point that the problem disappeared.

My colleague also mentioned getting password expiration notices.