For me RubyMine on Ubuntu 8.10 is unusable unless these two changes are made.
1. Performace on Ubuntu 8.10. Scrolling and other editing task are excruciatingly slow to the point of being unusable
Put option "AccelMethod" "XAA"into the Device section of /etc/x11/xorg.conf.
Identifier "Configured Video Device"
Option "AccelMethod" "XAA"
reboot? not sure do itjust in case.
2. JVM SIGSEGV (coredump) on Ubunto 8.10 and maybe others
sudo apt-get remove libc6-i686
I have also seen it as sudo apt-get remove libc6-i68
If something has a dependency on this library then there might possibly be a problem.