Back in the early 1990s, Netscape made a big splash with it's Navigator web browser and users pay for the software. Microsoft came out with Internet Explorer and quickly gain market share by making IE free and having the program bundled with every installation of Windows. There were the browser war between IE and Netscape for a few years, but eventually IE won and had a marketshare of about 89% of all web users. It then seem that IE got complacent and became slow and have lots of bugs and security holes.
Netscape had its code donated to Mosaic, which were the building base for Fire Fox, which had became a thorn on IE's side ever since. When Fire Fox first came out, users were wowwed by how fast FF was and the tabs which made it easier to organize their windows. IE now have tabs too.
If you have not tried Fire Fox, give it a few tries to see if it works better than your current browser. Their are other web browsers out there like Safari, Google Chrome, and Opera. What web browser do you use and why? What plug-ins do you like?