The following commands fixed this issue for me on a Toshiba Satellite U500:
$ sudo -i # echo 0 > /proc/acpi/thermal_zone/TM0/cooling_mode # echo 0 > /proc/acpi/fan/FAN0/state
Adding these before the exit 0 in /etc/rc.local helped.
The following commands fixed this issue for me on a Toshiba Satellite U500:
$ sudo -i thermal_ zone/TM0/ cooling_ mode fan/FAN0/ state
# echo 0 > /proc/acpi/
# echo 0 > /proc/acpi/
Adding these before the exit 0 in /etc/rc.local helped.