Im running the newest version of the MTDEV CM7 20120819 and when it said it fixed the blank screen after a caller ends a call i was SOO relieved! that was like my biggest problem for cm7, but when i tried it, i still got a black screen after somebody ended my call. Just wanted to let you guys who develop mtdev cm7 that its still not working, but you guys really are doing a good job! Keep it up! 
ALSO: It takes about a minute or two after they disconnect for me to use my phone, which kinda sucks

ALSO: It takes about a minute or two after they disconnect for me to use my phone, which kinda sucks