AutoRecover is a feature in VS 2005, which used for automatically saving work on a regular basis. This will be helpful when power failure or system crash. Anyway, we could turn off it in VS 2005 optionsEnviornmentAutoRecover
http://msdn2.microsoft.com/en-us/vstudio/aa718517.aspx [AutoRecover in the IDE]
If you go into Tools/Options and click on the environment tab you may see an option for AutoRecover.
If not there is a checkbox at the bottom that says show all options then it will show up.
When you click on AutoRecover you will notice that it tries to save your work every 5 minutes.