Update via Software Update worked perfect. Just repair/rebuild caches after install and reboot.
Kexts in /E/E: OrangeIconFix.kext, fakesmc.kext
Kexts in S/L/E: RealtekR1000SL.kext
reboot,sleep, well everything works.
Just have to get into fixing speed steps once and for all.. Anyone who can post their macpro4,1.plist? also, do you have change values in it if you change clockspeed of cpu?
wooooops... not everything works.
Sound is gone.
I used ANARCHiNTOSH patched AppleHDA.kext with 10.6.2. worked perfect. Those who have sound on ga-ex58-ud5 after 10.6.3: what kext/solution are you using?