Sean, If this other user is having the same problem as I am, I am using the same browser as I always have and have not changed any preferences...Is it possible APUG is not sending the right cookie? Pardon my ignorance. I have logged in with a different browser to post this message. I am on a Mac OS 10.2.8. and the problem occurs in Internet Explorer 5.2.
There is definitely a known issue with vbulletin forums and IE 5.2, I've been looking for a fix..