My user app server seems to get very unresponsive after running for a while
(several hours). To the point where it will never complete a login, it
just sits there thinking forever.

The server is a SLES10 box with 500 MB of RAM, and plenty of disk. The
server stats don't seem to indicate a resource issue, and I can still ssh
to the box without an issue.

Any ideas or suggestions on this? I hate to open an incident on something
this vague and requiring protracted testing.