Had been using Yahoo or MSN Messenger on Windows for voice chat but being a newbie on Linux the first thing I was able to get hold of for voice chat were Ekiga and Skype. Ediga came with the Ubuntu and Skype I installed from the website. Feisty Fawn (7.04) version worked good on my Gusty 7.10 as well. It just needed to download 3 more packages which didn’t take much time. So Skype with which I has been using on Windows as well is good to go; only problem here is not many of my contacts use Skype right now.
I am still looking for something that allows me to chat with my MSN or Yahoo contacts when on Ubuntu.