Just recently my 13-inch MBA Core i5 started to run its fans higher than before, even when the CPU is idle. I recall that it used to hover between 2000 to 2500 RPM. Now it's 6500 RPM and up. It might have been due to the last EFI update. I've already repaired permissions, reset PRAM and SMC. Here is the current reading from iStat Menu. Does anyone have any insight or solutions? Is my MBA running hotter than usual? Can I reinstall the EFI or try reinstalling Lion? Thanks.