At my office, I always get a "High risk website blocked" message and performance is a little goofy for mtbr.com (for the record, do not get this error at roadbikereview.com). For obvious reasons, I don't really feel like asking our IT staff about it :P .

It says:
High risk website blocked: Access has been blocked to "www.openxtracker.com/open.php" as 'Mal/HTMLGen-A' has been found at this website.

I'm guessing it's a false positive or no big deal, but wondering if anybody else has had similar behavior.