I have successfully installed Snow Leopard but it won't let me boot in to normal mode. I can boot into safe mode, but when I try to do anything with the system I get the infamous "You must restart" in like 50 languages. I haven't ever be able to successfully boot iDeneb v1.3 10.5.5 into normal mode, just safe mode... Any ideas on fixing either of these problems?

Specs:
MSI x58 Platinium SLI
Core i7 920
1TB WD HD SATA
80 GB Samsung HD SATA
CD-RW/DVD-DL-RW Lighscribe IDE
nVidia GeForce GTS 250 1GB