Comment 7 for bug 1078922

If you aren't using fancontrol, then there's no bug here. Without that, the fans are controlled by the hardware in response to temperature rise. You have nothing to worry about as far as damage goes as processors are intended to handle 90-100 C, so even 52 is quite cool. Often times the system bios will have options to configure how aggressive the fans should work to keep temperature down, so you may want to try changing those to keep it quieter.