i'm using 5.5 without problems, and 6 at work as well without problem. have you tried having your authentication information saved as a cookie? i'll admit to some puzzlement here because i had a similar problem when i first started hanging out here. when it cleared up i assumed that some change had been made at the site, now i'm wondering what i did to fix it. (grin) i can say that i haven't had the problem since i automatically checked the remember me box.