I've been browsing the forum for the last couple of days without frames - just the main frame taking up the whole window. Works nicely, except that this morning I stopped getting my list of unread posts updated. Every time I reloaded the forum index, new posts would appear, but the were already marked read! Uh oh, is Tom mucking with the forum code again?
Nah. Stupid me, I had clicked on the big [Mark all as read] link and was then reloading that. Duh.
Even better is that it was I who requested to have a global Mark-all-as-read in addition to the ones for the individual forums. Careful what you ask for!