SXSW is so packed schedule-wise, having your own meeting this late in the game is kind of hard.
I suggest piggy backing on the Nuclear Tacos meeting 6 pm aMonday the 15th in Brushy Square Park ( http://my.sxsw.com/events/event/4965 ) and the Dorkbot at 6 pm on Saturday the 13th in the same place ( http://my.sxsw.com/events/event/5292 ). I think that you should be able to get into those two without a badge, but I am not sure.
There are also events at Austin Hacker Space, and some people from the Austin Linux groups are having a party 1pm to 4pm Sunday the 14th, at Texas Coworking, which is over BD Riley's near the Driskill.
