I am assuming you mean when you choose your profile from the Windows login screen and that you are using Windows XP. This is something that can happen on occasion where the mail count gets corrupted or "stuck."
The easiest way to correct this is download TweakUI from M$, install it and go to Repair
and choose Repair unread mail count
from the drop down box and push the Repair Now
Or, if you feel like doing it the hard way, open your registry editor and navigate to this key:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\UnreadMail\your email address.
Once at that key just double-click on the Message Count
key and set the value to 0, then click OK and close the registry editor.
My advice would be to download TweakUI and use that, messing with the registry is risky business if you don't know what you are doing.
Tweak UI is available for free from here: http://www.microsoft.com/windowsxp/downloa...ppowertoys.mspx
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