recently i format my laptop(acer aspire 4520) and install xp service pack2.the problem is when i open windows explorer it opened normally but when scroll down the explorer it becomes very slow.... internet explorer,mozilla firefox also have same problem....i installed all the drivers....

How much RAM memory do you have in the laptop ???? Most Virus and Spyware scans are likely to work better in Windows Safe-Mode. http://support.microsoft.com/defaul... Computer Speed and Performance May Decrease When you open, then close programs, programs may not free up RAM memory. That is called "Memory Leak". Restarting computer will clear out its RAM memory. OR install more RAM memory. http://support.microsoft.com/defaul... Description of the Disk Cleanup Tool in Windows XP http://support.microsoft.com/defaul... How to Defragment Your Disk Drive Volumes in Windows XP ALSO To have more RAM available at startup, You can do Start, then RUN, then type msconfig Then uncheck items in the Startup tab. To find out what each Startup(or Process) item does or means, and any recommendation as to if you should close the process: http://www.answersthatwork.com/Task... Task List Programs OR http://www.processlibrary.com/ The Process Library