The longer you use your web browser, the more likely it is that you'll run into problems. It's almost an inevitability. It's also understandable. Once upon a time, browsers were only used for surfing the web. Today, we use them for everything. In fact, I'd go so far as to bet 90% of what 90% of people do on a computer is done via a web browser.
Because of that ubiquity, it should come as no surprise that our web browsers eventually give into the strain of what we put them through. And when you're not regularly clearing your browser's cache (and just generally treating them with care), they can crash and burn.
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When that happens, you have to take drastic measures. No, I'm not talking about uninstalling and reinstalling (although that can certainly do the trick) but, rather, resetting the browser. When you reset most web browsers, you lose all of your data, your bookmarks, passwords