Comment 33 for bug 61381

I started a (lonely) thread at ubuntuforums:
http://ubuntuforums.org/showthread.php?t=290822
that details my problem.
One apparently unusual feature of my problem is that I see no errors anywhere and am unable to post a backtrace.
I've had this happen on 5 successive rebuilds over the last few weeks, one with Dapper (all on the same machine).
I've started to watch carefully and the last time I installed I got the behaviour after bringing the OS up-to-date and installing nvidia drivers and java - nothing else.
It *always* happens after a shutdown as opposed to a restart.
I've just installed a CLI version of Edgy and manually installed X, nvidia drivers, and other bare-essentials, but I'd like to have a *full* install.

This thread seems to be all over the place in terms of symptoms. Is there anyone with a sense of how or if they are tied together?

Is there something I could post (or do) that would be of help?