RE: i7 512 SP3: Is it normal for the fan to run most of the time? It comes on whenever there is substantial disk activity - such as a data file sync to a NAS. I can hear the fan quite distinctly. The MS store person told me that their fans never run - and even if they do they are silent. I also notice that when the fan is running, that the battery time for the machine from 100% is only about 1:40 til shutdown (8%) at 50% screen bright, wi-fi hot spot connection to iPhone, and with the MS blue tooth mouse running. This is only using IE browser, NAV (background), Adobe 11 Pro, Word 365, and Outlook 365. This seems very poor for battery time. Thoughts and suggestions are appreciated. Thanks.