iMessage on iOS 6 doesn't make alert sounds consistently?
After upgrading to iOS 6, my iMessage no longer makes alert noises when I get incoming messages on a consistent basis.
If I swipe in and check manuallly, my texts are there, but the phone never made any alert sound like it used to.
It seems to be worse after the phone has been "sleeping" for a while.
Anyone else?
MBP (Late 2008 Unibody) 15, 2.4Ghz/256Mb 9600GT, Mac OS X (10.5.5)