All three of them are just fine. The oldest (and largest) is ten years old and the other two are six years old (as of 2009)
The picture below was taken on March 9, 2007 by my wife. Additional kitty photos are also online.
"Have you tweaked your OS lately?"
Choose the look:
Windows Service Configurations!!
Includes explanations of each service and advice on which services you can safely disable.