Something is wrong with my computer ???

my computer is running extremely slow %26#123;it use to be fast%26#125;. i have been getting pop ups %26#123;WinAntivirusPro2006 and 2007, WinAntispyware,etc...%26#125; AVG is finding trojans every now and then. i have spybot s%26d with tea timer running,zone alarm firewall,avg free antivirus and windows defender %26#123;all latest%26#125;. i use windows xp. what should i do? where do trojans come from? please help me. should i reinstall xp? what is the exact solution.

Something is wrong with my computer ???computers

A clean computer is key to a faster computer. Run the 3 scans below.

Run a virus scan weekly.

Update and run your Anti-Virus program. Don't have one? You can run a free online scan from CA.

http://www3.ca.com/securityadvisor/virus...

Run Spybot and Adaware weekly.

Download, update and run Spybot---http://www.safer-networking.org/... . Don't forget to use the Immunize feature.

Download, update and run Adaware---http://www.lavasoftusa.com/software/adaw...

Now to prevent spyware from being installed in the first place....

Download SpywareBlaster---http://majorgeeks.com/download2859.html

SpywareBlaster doesn't scan and clean for spyware - it prevents it from ever being installed.

It's main features include:

- Prevent the installation of ActiveX-based spyware, adware, browser hijackers, dialers, and other potentially unwanted pests.