Saturday, prior to the clan op starting, it took a good 5 minutes to connect. It would sit at the connecting screen until it timed out and needed to be restarted.
I don't think it is related to Black Ops 2 but it is definitely annoying.
I recommend that anyone planning on playing in a timed event show up a good 15-30 minutes early to make sure you can get past the horrible connection time coupled with the horrible game loading time.
Lords of Sarcasm
"He would have finished him off then and there, but pity stayed his hand. It's a pity I've run out of bullets, he thought, as he went back up the tunnel..."