I have my fan speed set at static 40%, after each boot it resets to auto (only have the general profile, deleted the rest)
This was never a problem in older drivers.
gpu: single 7970
This happened to me too, with the Crimson 15.11.1 Beta update, seems in order to fix the issue of setting the fans to a constant manual setting of 20%, they decided that they'd keep setting them to auto and not necessarily after a reboot.
I'd recommend rolling back to the last catalyst driver and wait for some "revolutionary new graphics software that delivers redesigned functionality, supercharged graphics performance, remarkable new features, and innovation that redefines the overall user experience."