If you're waiting on 3.3 then why not play something free?

Since your having HD space problems then maybe play some browser games?

Runescape can provide months of entertainment (if you enjoy it) without paying anything.

Quakelive.com is the best browser FPS i've played.

Those are both easy on the computer too.

Gametap offers a lot of games but I think most of them require a subscription fee.