My system boots fine and is stable, the one exception is with QuicklookUIhelper. When browsing photos or videos I can preview a couple then the 3rd or 4th one I try to preview locks up the computer.
OS X 10.9
MSI Z68ma-g45
Core i7 3.4
8gb ram
EVGA 560ti
1TB WD drive, 3TB WD drive
The...