Hey guys. After sweeping through bucketful of steps to fix this issue an still being stuck I would highly appreciate any help at this point. (Rather than installing the OS fresh). The issue is that the FB Share button was working as it should and since yesterday when I press it on the Notification Center nothing is happening its unresponsive. Even share buttons on finder. The fixes suggested on Google. 1. Clear VRAM - Done no luck. 2. Install (Re) 10.8.2 update. I tried a couple of times to do this but each time I get stuck at this screen! 3. Clear Safari data - Done no luck! Can someone please advise me how to proceed? Posted on the Apple Forum no luck! I just got this MBP a month ago and this is highly annoying. Using MBP 13inch Late 2012,Mac OS 10.8.2 Thanks!