In case anyone uses Websense here: It seems they've recently added another protocol to their list, "Kuro". As is always the case (why?!!) it's been added enabled on all protocol sets, despite it being in the P2P category.

Amazingly, even new protocols in the proxy avoidance category get added as allowed and not logged! Same goes for new categories, even sub-categories of "Security PG" (a paid-for addon category you may not have) which has recently got a new "Potentially unwanted software" category btw. Perhaps this is one for the FFS! forum!

Long story short: it might be worth taking a look at your filtering to make sure you don't have any nasty surprises looming.