Same happens to me on my AMD 64 bit – though on my other partition install with Ubuntu 8.10, 9.04, and Mint – I’ve been able to run secondlife w/o any problems starting up. Same computer, same hardware only different o/s.
I do not know if I’m doing something wrong, or if OpenSuse 11.1 with KDE4.2 does not play nice with secondlife. Methinks the former it is.>:(