Symptom: Computer is slow 

Problem: Windows Service Process using 100% of cpu

Fix: USB device causing Deferred Procedure Calls to use 40% of cpu

My client had a computer that was bogged down.  Really bogged down.  Click on something and it would take 20 seconds for the computer to respond to the click.  When looking at the cpu usage via task manager I saw that the virus software processes was taking up 100% of the cpu.  Naturally I killed this process and things went back to normal.  The cpu was no longer pegged. 

While computer users are all given an email account, it's uncommon they are warned about the potential problems that will soon follow. After a year or so, it's probable most of the mail they receive will test their ability to identify "spam". Spam is the name given to unsolicited email that wastes your time. The real spam demons are the emails that kill/damage your computer or steal your identity. I believe this is a must-read-article for new computer users. The information here may save you a trip to our office (to rebuild your system). The information here might also save your grandmother's credit record.