Running Vista Ultimate RTM, and have been since November. Since Day One, I've
had this annoying problem.

Around 50% - 75% of the time when I boot and try to log in, I get an error
saying Windows can't access my profile, and it creates a temporary one.

Rebooting generally fixes the problem and allows me to log in.

I have two different profiles on this machine, and the problem can happen
with either one.

These are local profiles (the machine isn't on a domain). This install was a
clean one, not an upgrade.

Anyone seen this? I saw a post in a different Vista newsgroup from someone
who seems to be seeing something similar.