Multiple Events - 4634, 4624

I have a Vista Business user who, several times a day, gets a dialog box on her screen asking her to re-input her network password.  When I have looked into her event logs, she has multiple entries for event 4634 (logoff) and 4624 (logon), which may or not be related.

I got her to reset her network password and restart her PC, which appeared to solve the problem for a day or so, but it's now happening again.

The system she's working with is a Windows Server 2003 SBS - the only server in the company.  In the Security event log on the server, there are multiple instances of event 538 (User Logoff) and 540 (User Logon) for her user ID.

Thanks in advance

Doug.
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dr0701Asked:
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Olaf De CeusterCommented:
Please keep an eye on her network connection to see if it drops out. Might be wise to update her NIC drivers.
If it still happens please post Ipconfig/all of server and her workstation.
Hope that helps,
Olaf
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dr0701Author Commented:
Thanks Olafdc - I'd hope it wasn't the network drivers, as her machine is only about 3 weeks old.
I'll keep an eye on it, and let you know.
Thanks
Doug.
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Olaf De CeusterCommented:
If the machine is new it probably will be the drivers. A windows update should fix that.
Olaf
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dr0701Author Commented:
Whilst the events are still appearing in the server log, I think I've managed to stop the disconnection issues by removing Backup Exec DLO from her computer.
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