Having some problems while running in Ubuntu 0810

[Urkle]

By "downloaded version", do you mean the demo or the linux full version? The full version includes more fixed than the demo version does.

Are you sure any of these "lock-ups" and "slow frame rates" aren't recreatable?? If I had a save game where I could recreate I'd be able track down what the cause is. and by Lock-up, does the game hang? or does it crash? If it crashes, send a backtrace from GDB (via a core dump)

Also, are you running any other applications on your system that could be occupying CPU?