Thanks, conceptually everything you said makes sense, but what I have found out is this only happens when my site was in a frame (I only found that out after hours of testing). So if I run the index script outside of a frame, I do not get the page expired, If I put it in a frame, and I am using XP sp1, I get the message. If I am using XP sp2, I do not get the message (either in or out of frame). This is very strange. I am curious as to why XP sp2 fixes it (never version of IE as well (6.028 vs 6.029)