Beryl froze all my windows !!

[allawi]

Hi
I am really new here, and new to Ubuntu as well. I installed on a Athlon 3000 XP ( i know its old)
with 512 Memory
It runs fine, then I installed beryl and modified the themes and all and everything seemed to be fine, was very happy with it. later when I restarted and then started beryl as well, all the open windows froze in their place, but working fine as the computer fire fox and all the only thing is that all windows are immovable !!
I dont know how to fix this, should is reinstall beryl. if yes how can i do that.. please show me in detail as i am really really new to this whole system.

Thank you very much for your help

Allawi