The way I see it, Gaspers, is that ALL software is potentially a problem for someone, and in some cases morso than others, meaning that no software should ever be recommended to anyone for fear it'll mess up somebody's PC.
In fact, given how many problems can arise, it's probably best if 90% of PC users don't use one any more.
Oh, and why stop there? I mean, how many motorist know how to fix a car if it breaks down/has issues? Yup, we should probably lobby all the world governments to force 95% of motorists off the road... cos cars WILL break down, you know.
Like I said before, we can't hold every PC users hand or create "novice user" only aoftware. Besides, if a user can figure out how to use a computer and manage its general workings, then a browser shouldn't be too hard to figure out, and Waterfox, Cyberfox and Nightly aren't the worst browsers out there... though IE comes to mind.
I have used both Cyberfox and Waterfox without issues and found both to be stable, easy to use browsers that get the job done, and I well imagine that Mozilla will release a pretty decent 64 bit version when the time comes