oh cool thanks, so exactly like that?
sudo -s
(type your password)

cd /system/library/extensions

chmod -R 755 * && chown-R root:wheel *

cd ..

rm extensions.mkext

kextcache -a i386 -e

reboot

for both my internet kext and sound kext

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CPU: Phenom x3 8650 @2.54 ghz
Mobo: ASUS M3N HT-Deluxe 780i SLI
3 GB 800 OCZ RAM
Lawless 10.5.4 w/ Voodoo Kernel