What is postmortam debbuger?

When i use search files and folders the following message appears. Post mortem debugger has caused an error and will now close. What the hell does this mean because my pc crashes when this happens. System WINDOWS XP HOME service pack 2
shaggy, December 2004


done
It's just a Microsoft program that gathers info into a log/text file when something like that happens. Here's more information:

http://support.microsoft.com/default.aspx?scid=kb;en-us;308538

Warlock, December 2004