I do not have any experience with MacBook Airs previous to revision C that I now own. I am using iStat menus and trying to gauge CPU usage, CPU temperature, and fan activity. I thought that it would be helpful to know how other 2.13 SSD Airs are performing. What's a normal idle-low usage temperature? What is a normal mid-high usage temperature? What is abnormally high? One thing that I have noticed is that CPU temperature and fan activity seem really volatile. Once, upon boot, the temperature ramped up and fans kicked on for no apparent reason. Sometimes web browsing alone is causing the fan to kick on at 6200rpm. Currently, I am sitting at 129F/54C, with fans close to 2500rpm. Also, it seems odd to me that even when the fan is blowing full blast, i can not feel any air flow if i place my hand in front of the vents. Is the 2.13 GHz CPU causing higher temps? Is what I am experiencing "normal" for a MBA? I want to put this machine through it's paces within the first 2 weeks so that I know what to expect.