Ubuntu – What GPARTED alternatives are available

If you do not mind running in a browser then Tweetdeck, Hootsuite and Seesmic all run on Chrome(ium) and the last two on Firefox. Personally I run Tweetdeck under Chrome and running these services in a browser is probably the best way forward. Adobe have stopped development of Air for linux, so do not expect much new software in Ubuntu using it.

avast! Linux Home Edition ofc! Simple the best interface and virus detection available for a home user.

But, I have to agree on the comments, if you are not running a server an AV is a bit overkill for linux. On servers were files are hosted for users, using different operative systems, etc and AV can detect and eliminate virus for the user, for home linux installations? Not really something you need a lot.

Don't forget that most these AV for home users are not licensed for server use or even organizations so be careful with that.