[thescriptkiddie]

I once used a very expensive wolf brand microwave that would always run the magnetron for at least 10 seconds regardless of the power level setting. So if you set it to do 10% power for 10 seconds it would actually do 100% power for 10 seconds. I'm kind of shocked that their QA didn't catch this, if nothing else it should refuse to run at reduced power settings for times under ~100 seconds.