For a long time I thought that I had connection issues with COD Black Ops. Ground War is probably my favorite game mode in Black Ops but I could only remember playing it a couple of times when I first got the game, then one day it just didn't work. I would search often but I could never seem to find other players. Then one day a friend of mine got COD Black Ops and he was connecting to Ground Wars all the time, I still couldn't find a connection but I was thankful that I could at least play Ground Wars whenever he was online and I joined his group.
I've downloaded two of the expansion packs for COD Black Ops (First Strike and Escalation), I think these have some fun maps so I told my friend that he should download an expansion pack, he downloaded First Strike yesterday and as soon as it was installed we couldn't connect to Ground Wars anymore. Considering that Ground War was our favorite game mode, we felt punished for having it taken away because we purchased expansion packs. Why would Treyarch do this?
Are you having trouble connecting to Ground War? If you don't mind getting rid of some expansion packs for a while then here's your solution, go to your game data utility and delete Black Ops. This will uninstall the game and expansion packs from your system but thankfully all your online stats will remain the same and are not affected. After that pop the game back in and install it again without the expansions. It's not the best solution but at least you can have Ground War back and you can install the expansions again later if you really miss them.
Treyarch please stop punishing those of us who buy your expansion packs, someone should fix this issue!