Hi svitale75,
I am also running SL on an Asus P6T (standard), but it is very buggy.
For example I can only boot in -x safe mode, and I am getting frequent kernel panics. I've tried many things like running the DSDT patcher again and updating kexts (DSMOS and fakesmc).
I also need a fix for my Sapphire Radeon HD 3650 512Mb Video Card, someone suggested netkas' site. I went there but did not find a kext, and I'm not sure how to use an injector.
Any help would be appreciated.