off topic: disappearing sent mail

["Chris Cheatham" <nchrisc@xxxxxxxxxx>]

Sorry, this is way off topic, but I don't know anyplace with more computer
wizards than here.

Outlook Express: Spontaneous disappearance of five years of sent emails.
Skips from 1999 to 5-1-04. Any ideas? Win2k, plenty of disk space.

Thanks,
Chris