Problem with server

Hi

Iam using Webrick server
WEBrick 1.3.1
ruby 1.8.2 (2004-12-25) [i386-mswin32]
WEBrick::HTTPServer#start: pid=1104 port=3000

This is what iam using for my application

I am using ferret for search and it search through lot of data
so kind of taking some time

But problem comes when I hit “stop” button on my browser

server still runs in background for that request even after stop button
is hit

and no futher actions can be performed after that ie, server is not
responding to any sort of requestions from then

If anyone of you know the problem
please let me know It would be a great help for me

Thank you