Yeah, though it works like this: I can go for months without an incident, but once it happens, it seems to aggravate it and it can happen again and again quite often for a short while till my knee gets a chance to rest and recover... last breakout happened toward the end of April (when admittedly I was doing a lot of walking and carrying heavy stuff - that could have set it off). But yeah, it can come completely out of the blue, which really sucks when I'm somewhere in public...
Friend request accepted :)