Don't think anyone's reported this yet, but there seems to be a new issue with navigating within threads. If you bookmark a post on (say) the last page of the thread, and then use the "First" or "Prev" buttons to try to move to a different page, it now isn't working but jumps back to the bookmark instead. I suspect someone's made a techy change recently but it's gone a bit wrong so any bookmarks placed are now overruling any other navigation instructions. Hope that helps...