Anybody else getting Bad_Pool_Caller errors with Avast? I've got WIN XP Pro and the latest Avast 4.1 Pro Build 4.1.342 and Zone Alarm Pro 4.5.538 just booted up. I walk away come back 10 minutes later with a blue screen with this error. Is Avast accesssing some memory at that time? Although if I get on and stay on, it seems to let me work for quite a while. Hours even.