Hi guys, total noob here. I have recently switched from custom built PCs to Mac. I have a MacBook Pro and ever since yesterday, at the login screen when I start up, it says on my username icon "Update Needed" and my picture has gone. I have checked to make sure that I am running the most up to date version, (10.7.2), which I am but it's still there. Any help or suggestions would be great. Many thanks, Greg.