Its been ages since I played with SecondLife but I was reminded about it this evening and thought I would put something together regarding how to install it. There are not any packages for it in the Ubuntu repositories, but it is pretty simple to get running.
For those that currently use SecondLife maybe you can comment on places to hang out and things to go see for anyone just joining in.
Requirements for SecondLife 126.96.36.199
The first requirement is that your machine passes the minimum system requirements. On Linux this generally means 3D rendering ability. Here are the official requirements, for your information: