Why use a standard user account instead of an administrator account?

The standard account can help protect your computer by preventing users from making changes that affect everyone who uses the computer, such as deleting files that are required for the computer to work. We recommend creating a standard account for each user.
When you are logged on to Windows with a standard account you can do almost anything that you can do with an administrator account, but if you want to do something that affects other users of the computer, such as installing software or changing security settings, Windows might ask you to provide a password for an administrator account. http://co1piltwb.partners.extranet.microsoft.com/mcoeredir/mcoeredirect.aspx?linkId=12881948&s1=d617d442-ca04-f51f-7ac0-8f05d80dfcd8

A Simple Way to Speed Up Windows

Close applications you are not using. Having too many application open takes up unnecessary resources. Build yourself a habit of closing each application whenever possible. Minimised and idle applications still takes up CPU power therefore slow the application on which you are working.

Beware PDFs From Strangers

Researchers on Wednesday said they have uncovered attacks in the wild in which malicious Acrobat PDF files are exploiting a vulnerability in Flash and dropping a Trojan onto computers.

(Updated 16 July 2024 Original link found no longer valid.)