Ian,

Ubuntu 10.10 should run SH3D without any problems. I'm using Ubuntu 10.10 (32-bits) in combination with OpenJDK Java 6.

Your problem description isn't very clear. When exactly does your computer hang? Directly after starting the program? After trying to insert your first piece of furniture? The most common problem SH3D users have, is caused by an incompatible graphics card, especially on older (= approx 3+ years) computers. Read what the FAQ says, and what the Linux solution could be.

You can easily download and install the latest version. It has been significantly improved over the version in the Ubuntu software centre.

Hans