Cannot login locally to the SBS box

Hello,

1 SBS 2003 SP1 server, 1 Windows 2003 member server as a DC, 15 clients XP
Pro SP2 (working on SP3)

Recently I get this unusual error. I cannot login to the SBS box in the
morning, specially after the weekend. It does not respond to the
CTRL+ALT+DEL or mouse or using the keyboard. As far as I can see everything
works as it should, I can connect using the RWW, there's nothing in the
events log that looks like an error.
All programs work, all connections work.

The only thing I can do is shut it down on the remote, but that makes a mess
of some data people were working on. I asked them to stop working, I checked
that they did but afterwards I had to use the bachup to put the data back.

The most recent change is I started using Exchange and I'm not 100% sure
that everything is configured as it should.

Please what is the best way to troubleshoot this? (apart from learning a
decent trade.)

Thanks in advance

Regards
Dieter





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