Hi all, I've suspected that my 13" i5 air may be getting to hot / or the fan is kicking in too early. So I went to the apple store, installed istat on 3 air's and performed the following: 1. monitor cpu temp and fan rpm when system is idle 2. monitor cpu temp and fan rpm when system under load (many apps open, safari, iTunes on with radio streaming and holding down the arrow key in iPhoto cycling through hundreds of photos. Results were consistent across all Airs. Results for 1. CPU @ 50 degrees Celsius and fan RPM 1999 Results for 2. CPU between 60 to 80 degrees and fan RPM 2500 to 3000. Only when CPU temp hit low to mid 70s did that cause the RPM to rise. It was still 2000 at around 65-70 degrees. Perhaps because the airs are placed on those wooden tables. I believe enclosure base temps were between 30 & 32 degrees. 10minutes ago, I had transmission downloading at 1.5mb per second and opened a 100mb pdf photography magazine in preview. No other applications were open. Going through the pages of this pdf caused the cpu heat to rise at around low 60's however the fan RPM was hitting 3000rpm plus. This pdf file could be imaged based. I also monitored preview app's cpu% during scrolling through the pages and it rised upto 40% depending on how fast I was scrolling. Right now as I am typing this, transmission is downloading at 400k, yet cpu is at 58 and fan rpm is at 2600-2800rpm. However the enclosure base temps are at 36 degrees. My room temperature is mild (low 20's). I live in london so no heat here. Should I be concerned here? I feel only downloading and viewing a PDF (albeit a large one), shouldn't require the fan to go on.