I am using Windows XP SP2 with IE 7.0.

Everything was working fine until I tried installing Second Life. The
application froze and forced me to restart. Upon restarting, I have had
numerous mouse related issues.

On the Desktop, double clicking only selects the file. Double-clicking a
second time opens the application or document.

In IE. single clicking doesn't always work. I have to double-click a link to
have it open the page.

Things I have done:

* I have resintalled the mouse driver and adjusted the mouse Control Panel
settings.
* Removed, installed and removed Second Life.
* Reinstalled IE 7.0
* Gone back to an earlier System Restore Point

While the computer is usable, I'd like to fix the problem.

Any suggestions?

Thanks