Adding WPA support in Ubuntu is extremely easy. All you have to do is add the wpasupplicant package. Then, just reboot the system. The next time around, if your card is configured for WPA, it’ll actually automatically detect. So far, I’ve tested this with D-Link, Orinoco, SMC, and Senao cards. They all work off automatic detection.
This is actually a brilliant thing that Ubuntu has done since this brings this distribution that much closer as a integrated solution that’s pretty newbie resilient.
The entire plug-and-play platform actually works fairly well and I didn’t have to configure anything. Gone are the days where you had to go around tweaking the drivers. Just click the Network link in the status bar, and choose your connection. You’ll be prompted for passwords and such if there is need. Brilliant.