Jim wrote this nice article that may help others.
Summary:
o Comodo and avast! virus scan overheating solutions with TThrottle
o Rules question
o Configuration
1. Comodo and avast! virus scan overheating solutions
I'm running a GigaByte EX58-UD3R-SLI board (i7 processor) under Vista 64. I worked the last two days with TThrottle 1.75 trying to overcome a heating problem when BOINC tasks and COMODO Internet Security virus scans are running at the same time. I saw the hint on your forum to try Avast!, but this displays the same problem.
It turns out that both comodo and avast! have self protection features that disable throttling the scans. I've attached a PDF file with screen shots and instructions to disable these features and restore temperature control by TThrottle. The "protection" appears to make these exe files run as "SYSTEM" rather than "Administrator" or "User". With the Task Manager, you can see the change.
See pdf below.
Jim uses the rules tab throttle.
tthrottle_avast_comodo.pdf (http://www.efmer.com/forum/tips/tthrottle_avast_comodo.pdf)
A note of caution:
This defeats an intended security feature of the virus scanner. It may make the virus scanner more vulnerable to threads.