I'm running Windows 7 Pro x64 and FF 3.6.13 . My preferred editor for '''editing''' .html files is gvim. However, when I permanently associated .html files to be opened by gvim, the next time I start FF it says it is not the default browser and if I want to set it to default. When I do this, make FF my default browser, and then double click any .html file, it doesn't open in my preferred editor but in FF. I always thought default browser primarily means for browsing the web, but in my case it clashes with how I prefer to work with local documents. This is tested with a new, empty profile.