My iMac was running GREAT. It started up fairly fast. Then i installed my wireless internet adapter (usb) and was on the internet, and the window came up saying that i had to restart. Now it takes A LONG time to start up, and when i rebooted it said that Mac OS X had failed, resulting in restarting the computer. Because of this new device, will it keep doing this? Im using it right now and all seems well, but i am still a bit worried. Thanks for you help!