Why is my Business Computer slow?

Another 10 reasons your computer will run slow.
1.  Start up over load
2.  Spyware –  www.freeware.com; www.spybot search and destroy
3.  Registry corrupted – registry mechanic
4.  Security issues – PC Tools
5.  Page files need to be increased
6.  Too many programs
7.  Down loads
8.  Too many windows and temp files
9.  E-mail virus – Trojans
10.  Computer too old – buy new $400, VISTA , wireless