trouble opening arduino IDE

So I've followed the instructions on these links: http://www.pluggy.me.uk/arduino-ubuntu/ and http://arduino.cc/playground/Linux/Ubuntu

However, once I get to the folder arduino0022, double click arduino, then click run, nothing opens. Any idea what I'm doing wrong? Let me know what other information I can give to help diagnose the problem.

Maybe relevant information: I'm using an arduino uno, I'm running ubuntu 10.10.

Really dumb error - the name of the file that I extracted the arduino-0022 folder into had a space in it. Some class path stuff was getting messed up. As soon as I moved the arduino-0022 folder into another folder, everything was fine.