What could be done to improve the performance of Windows XP Professional in one's computer?

Which utilities are used to improve disk performance?

Which are true regarding dynamic disks?

How should the default Microsoft Error reporting feature in Windows XP be disabled?

Multiple display is configured for User A but one user application failed to display on the secondary display. Troubleshoot.

The administrator of XYZ company finds that one of the users in his network is trying to upload some unwanted material. He needs to prevent that user from uploading that immediately without effecting the work of other users who are accessing shared folders from the server. How should he disconnect that user without wasting time?