Replies disappear, don't come back.

My reply page is there, but there are no replies there. If you click the older link replies will be there, but once you've viewed a page those replies disappear. So after I've viewd page 2, it becomes an empty page. Page 3 will be there the first time I go to it, but will be gone from that point on. Where are the replies?

Update: It appears to only be happening in IE. Once I view a page of replies, the replies will disappear from that page on all following views. Happened on multiple machines in IE. Couldn't reproduce in flock.