I have a Iphone 3gs 4.0.1 jailbroken with jailbreakme..
Well just a few days ago I notice dat when Im making a phone call and when Im done it gives me a black screen.. and when I hit a button nothin happens, and when it do get to the lock screen I cant unlock it..

Also did this on my iphone 3g also running 4.0.1
Anyone have a solution to this, any help would be appreciated..Thx