Hi: Currently IIS is running on my PC, I have a total of 45GB hard disk and the memory is 320MB. However the computer is responding very, very slowly to any mouse clicks. When I launch an application on my PC, it takes a long time to load. When I open the task manager, I find that a process called "inetinfo.exe" consumes about 100000k. and the number is steadly increasing. What is the reason which leads to the slow response of My PC? I highly appreciate any comments on this problem!

Have you read this; http://msdn.microsoft.com/library/default.asp?url=/library/en-us/iisref/htm/ISAPIAndWorkerProcessIsolationMode.asp Not to sure how important that service is to you but I would just disable it unless I needed to use it.

It's the IIS debugging program. It won't let you end it because it is needed by the system to run IIS.