[Spambayes] Another bug? Outlook 2000 win2k

[Jerry Williams]

I think that I noticed another possible bug today.  On my windows 2k laptop
using an exchange server.  I have read messages from my inbox and then come
back and found them marked as unread. It has happened a couple of times.  I
am trying to pay more attention to the problem to see if I can figure out
more details.
Has this been seen before?
Thanks!