You could try fixing permissions and wiping cache and dalvik cache in ClockWork Mod if you have it. If that doesn't work then you could try wiping data (which is basically reformatting your phone, so back up first).
this should ALWAYS be done both before and after upgrading your rom, even if it is based on the same android release (4.0.1 -> 4.0.4, etc...), and especially if it is between different versions of android (ICS -> JB, for example)