foleyjo, schtruck, i had the same problem with no updating screen, but i can unfreeze it when switching to dualcore mode, but when using mono core mode and hardware acceleration is on i don't have such a problem. I'm using CM10 ROM.
I have another bug - I must choose select/start buttons to show on overlay every time i reload fpse, this option isn't saving
EDIT: I have mistaken, with hardware acceleration set to ON the problem persists. The screen freezes when I try to switch framelimiter in monocore mode