There’s no real legal redress, Hans. The product is provided free and as has been said I am free to seek alternatives (which, from my experience, all seem as bad as each other). It nonetheless does not mean I should accept a shoddy product without comment.
Bibblebub, I am using a computer of a reputable make which is a little over six months old. It runs on Windows 8 (which itself is deficient) and the latest version of Firefox. I’ve made no additions or alterations to either. I use it simply for browsing the web, the occasional bit of online shopping and share dealing. I also use my machine to access e-Mails, to use some Excel workbooks, and Access database or two and some Word documents. That’s all. No fancy programmes, no modifications. All software (principally Office 2013) obtained from official sources. If Firefox lasts two hours without a lengthy spell “Not Responding” (normally meaning I have to “End Task” with Task Manager) it is a miracle. If it goes an entire day without crashing entirely it is akin to the second coming. My pontifications are justified as I do not believe “the problem lies with me”. I am not a programming expert (though I have considerable experience using these products over many years); I have no idea what causes these problems but it’s nothing that I’ve done. I simply use the applications as they are meant to be used.
It’s true that nobody has “foisted” Firefox on me so perhaps that was the wrong word to use. I chose it because I was told it was better than IE (with which I had similar problems on an earlier machine). I note that you say it takes only a modicum of effort to sort out most problems. I’ve no idea what that effort will involve. I’ve followed the advice given by Firefox (which seems to consist of simply clearing cookies, history) etc. which brings further inconvenience) and it makes little or no difference. And in any case, these problems should not arise in normal usage.
I’m glad you seem to accept products which clearly are not fit for purpose and are prepared to invest in a “modicum of effort” to cure manufacturing defects. I’m not. If my new car continually broke down after a few weeks following normal usage I would not be prepared to expend “a modicum of effort” to keep repairing it and until there is a suitable alternative I shall continue to “bad press” this rubbish.