I know I cannot be alone in this right now. I need some help as I am trying to find a solution to fix my 2.0 Ghz MacBook Pro after installing the three updates yesterday. After installing the three updates; Front Row, Quicktime and the Security Update (suspected culprit) I restarted to get a screen that hung only showing my desktop background, the spotlight icon (incomplete menu bar) and the spinning gay pride wheel. I tried various things to try and fix my laptop: 1: Single-User Mode deleted my bootcache and user-added fonts. 2: Install Disk Permissions Fix, verified my hardware is ok. 3: Safe-mode dumped third-party widgets, startup items, and desktop files. 4: Reinstalled updates 5: Reinstalled 10.4.6 Even after all that, I still hang in the startup. Its never consistent, its either the grey screen, or the blue screen with the mouse, or the start up status bar that never fills or the original screen mentioned above. If anyone else is experiencing this, let me know what machine you are running (I suspect this is another MBP exclusive [eyeroll]) what was installed and what you have tried/ what the results were. Basically, I am not wanting to take this to the Apple store because I would rather solve the problem then have to reinstall, especially a week before the quarter ends.