Windows ME isn't crashproof. You may have used just one tool to find pests and need to find more tools. Try Adaware, Spybot, Bhodemon, Cwshredder, Housecall...
Remember that Microsoft left the DOS based Windows with oddities that will require reboots as resources run out and more... Reboot daily.
I have comcast high speed for my and using Windows ME. leave my computer on all the time. My computer will freeze up and I have to shut it down improperly. Recently, I used the PC Doctor to get rid of pests, but that is it. Any insight would be apreciated!