Unable to dismiss notifications using two finger swipe.
I recently upgraded the hard drive in my MBP (Early 2011) and reinstalled ML (10.8.4) and now have the same issue. When I put in my old hard drive and boot to the same version of ML there, it works just fine, but not on the fresh install. Everything else seems to work just fine, just can't two finger swipe to dismiss notification banners.
MacBook Pro (15-inch Early 2011), OS X Mountain Lion (10.8.4)