I know they are using the new xorg in feisty... has much changed? i am pl 1f40 anning to do a clean install with feisty (moving some partitions around), but i have put a fair bit of work into my current xorg.conf file. are the two versions any different with respect to the xorg.conf file?

When I first upgraded I used the exact same (customized) xorg.conf as in Edgy with no issues whatsoever.

I've since done a clean install.

I guess if you back Feisty default one and swap your custom one in the worst that can happen is that you will have broken x for one boot.

Good luck anyway