Hi, I'm not sure what has happened (or I've done) recently but any new app that I download (Google Chrome, Portrait Professional, Earth Desk) opens and then freezes - spinning beach ball. They have been added to the firewall but still no luck. Initially I blamed the problem on Chrome, but since the next 2 apps I've added do the same thing, I'm starting to think it may be a fault with my iMac. I'm running the latest version of Lion. Thanks in advance.