Did you have to re-apply MultiBeast setting like graphics card and audio drivers?
While updating to 10.8.3 I had the scare of my life, my Z77X TH and GeForce 670 setup would not boot... :S
8B811C0C0000EB068B81200C0000 B80200000090EB06B80000000090 /System/Library/Extensions/GeForceGLDriver.bundle/Contents/MacOS/libclh.dylib
Agreed.
Anyone with a GTX 700 series done this yet?