There is a bit of a hazard to using an older browser, though--even one release back. New releases are often to fix security issues, which are constantly being found. It may not be something likely to bite us, but I still don't like to be using something on the Internet that has known vulnerabilities.
I wouldn't usually upgrade the day the new release comes out, but within two or three days. I figure if it's a disaster, early adopters will experience the problems and a fix may be forthcoming.
I don't think one browser is enough because it's not unusual for one browser to have difficulties at some site that another does not. On Linux I like to have Opera, Firefox, and SeaMonkey. I don't usually use Konqueror as a browser, if I bother to install kdebase at all. I'm avoiding Chrome and I've stopped bothering with Dillo, Links, Lynx, and others in that class.
>> went ahead and fixed the backspace action for FF 4 in VL. Just a matter of about:config ... search for one line of code in the search bar, change a value of 2, to 0. >>
Yep, it's easy when you know what to do. By the way, you don't have to restart the browser. The backspace action takes place as soon as you make the change.