i use urllib2 to open the websites and get info. it works for a while, then will be stopped, the error in idle is http error 404 no such domain. but i just changed the parameters in the url by looping, and i can open it in ie or firefox. any one have any idea to deal with it? if I running 2 more similar programs in command line at same time, them will be stopped more sooner.

my code is running in python 2.5 + tor.

Thks...