For those that posted I am using and AMD atthlon Processor, and it's not the anitvirus, because what you are talking about is when the file is complete norton AV scans the file and slows everything down. I keep it disabled just for that and this is happening while the file is still downloading. As for the OS or Hardware problem., I had a complete OS diagnostic test done on it and there are no problems. Computer techs that didi it said it was a software problem. This only happens when I use Mirc. This never used to happen on versions before 6.15. PLEASE SOMEONE HELP ME I AM STRESSING OUT ABOUT THIS!!!!.