the only issue i have had recently, was twice yesterday my wii actually froze and did a solid beeeeeeeeeeeeeeeeeep noise while playing black ops. i couldnt power down the console with the wiimote or the reset button. had to either hold the power button 4 secs to power it down or could unplug it all together. the only other time my wii has done this was a cpl times while playing the Conduit in online mode well over 6 months to a year ago.
coincidentally , a kid mentioned that a few days ago and asked if it had happened to us and I said no. well, it's happened now =p
..and again, if anyone is trying to load up black ops for the first time and it isn't going to the update patch on its own and says loading indefinitely, you can try forcing it by going into zombies online mode and it will then ask if you want to dl the mandatory update. upon saying yes, it boots you to the multiplayer screen and the patch loads up for you.