Outlook client locks up

I have a Outlook 2K SP1 over Win2K SP3 client whose e-mail locks up just
after Outlook is opened. OWA to her account is fine. I blew away her
profile. Still does it. It does it even when logged on as Admin. What could
be causing this? I am running Exchange 5.5 SP4 over Win2K SP3 at the server.
I have reloaded Outlook twice.

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