Well, I am having a really slow network connection (Wi-Fi) which often disconnects. If this was not enough, half of the sites of blocked with OpenDNS.com. Funny (and insane) thing is that they even blocked stackoverflow and gmail.
Till now I was using Ultrasurf but Its got problems of its own. I wont get into explaining them. I want to know a firefox addon for proxy browsing which has a database of its own, and can be enabled or disabled by click of a button. I found FoxyProxy but I think it is way too complicated than what I want.