Bob
Though Webmaster Bill will have to give you a more in depth answer I've noticed that sometimes the site does not remember my name/password/login but does tell/show me new messages. I've already tried editing/re-inputting my profile and nuking all cookies and starting over but that didn't fix either. Try editing your profile and seeing if that fixes it. Beyond that...I defer to the wisdom of the Webmaster.

Thanks for letting us know...Lee