Desktop Icons double-click functionality gone

[btltm818]

Hello,
desktop icons will onyl work by right-click/open-
no more double-click functionality. WinXP SP3

 

[hang-the-9]

There is a virus that causes this, but could be something else try the LNK fix from here http://www.dougknox.com/xp/file_assoc.htm it's about halfway down the page.