Slow Mac Book Air with too much Noise

hi,

have got 2 months old mac book air 13". 10 days started giving noise(not sure if comes fan, hdd, processor etc) deadly slow processing. took telephone mac , visited service center , found hardware ok , re installed lion , worked ok 2 days , after same issue. time updated 10.7.3 , after first rest after upgrading 10.7.3 noise gone , speed tonight again same issue.

when issue comes kernel_task goes till 388% cpu usage
, % system shows 85% under cpu tab

guys ?

 

well, since changed pretty on software front, think safe theres hardware malfunction system. acting up, try taking in condition different apple store , have them take look. hope helps

 

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