Comment 6 for bug 341720

There isn't an fglrx driver for Jaunty yet, and the one you are trying to use is not appropriate for the X server you are running.

[atiddxSetup] X version mismatch - detected X.org 7.1.-1.902, required X.org 7.4.-1.906

Subsequently, X falls back to using the ati driver, which should be good for your video card, but you have the libGl from the fglrx driver which is causing another failure and the resulting crash in compiz.