Hey folks, anyone else having issues all of a sudden? My Rev.A has been flawless, never gets very hot, runs great. Until today. Suddenly my MBA is going nuts. I've turned off every extra that is usually running, only using Safari and Activity Monitor. I tried disabling and re-enabling Coolbook, and it made no change. Only thing I've changed since yesterday is updating to 10.5.8. Any advice (besides get a Rev.B)?