Playing around trying to optimize my system. I've noticed that sometimes a kext will not load if it's in E/E but will is it's in S/LE. Other times a kext will not load no matter which directory you place it in.

I move a kext to E/E or intall to S/LE and then run Kext Utility and Disk Utility.

Any ideas why and how to fix?

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Gigabyte EX58-UD5 - i7 920 @ 3.2 GHx - eVGA 8800GT
Asus P5Q Deluxe - E8400 @ 3.6 GHz - Asus 7900GT
iMac 2.2 GHz - 4 MB