>>I don't know if this will entirely answer your quesiton. A known cause for this is directing a COPY FILE operation to LPT1. You can find details (and a workaround) in MS KB article number Q157635.
Oh yeah, I forgot about that one - I've never copied a file to a port in my life, but you never know :) I was hoping the April MSDN would have more news on these ISOs, but I don't see anything new...
The Anonymous Bureaucrat,
and frankly, quite content not to be
a member of either major US political party.