When you say that your system is slowing down, do you mean that open programs don't respond as quickly? Just want to be sure that you don't mean it's your internet access/web browsing.
What sort of antivirus/spyware programs are you running? Which other programs are you using at that time?
I have a Windows XP professional edition, on a Dell 500m inspiron. For some reason at 5 pm every evening, the system slows down considerably. I havent scheduled anything to be running at that hour. Is there something in particular that I need to check to find out the why this could be happening?
Any help on this would be appreciated.