Re: 280.04 solved fan speed problem on Ubuntu 10.10
That is a high temperature, no wonder the fan is working. For some reason the card cannot cool sufficiently.
I have a dedicated NVS 135M and it is around 50-55 C at idle. It fried once and i did not play any games on it neither used it for anything else GPU-intensive (and the fan wasnt working much). Since then i monitor the temps continuously and made a script that fires the fan at max if 64 C is reached (via i8kfan, a Dell app).