Not sure if this has been pointed out before or not, but I've run into a possible bug with paging in the forums here on the dotnetnuke.com website.

When browsing the forums without logging in, the default number of posts per page is short.  For example, I was just reading a thread that was broken up into four pages.  However, my profile is setup to display many more posts-per-page, and that same thread was only one page long.

So, I'm reading page three of the thread, and want to respond.  I login, and it brings me right back to page three.  I go to respond and it won't let me, because there is now only one page instead of four.  It gives me this error instead:

A critical error has occurred. Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

Just thought I'd point that out in case you hadn't heard of it yet...