I'm one of those people who keep their PC on 24/7, don't turn it off under normal circumstances, and reboot probably once in a month. Similarly, I don't turn off my Internet connection unless I really need to or are forced by circumstances (e.g. a thunderstorm brewing, network disruption, or my ISP being an arse). I also don't close programmes I regularly use, ranging from browser, music player, download manager, notes and IRC, to maintenance tools.
What I'm trying to say here is that my browser doesn't lag just because a certain amount of time has passed. If it does, then something I have open must be the cause. (If you remember, when we just upgraded the forum, we had a fancier navbar that we had to take down because it was poorly coded and would hog down browsers―or at least Firefox―despite making use of HTML5 and not Flash. That's one such case.) Sure, Firefox crashes sometimes, though my personal experience still has me choose it over Chrome and Opera, both of which in my opinion have worse performance overall.
I'm a heavy user with regularly hundreds of tabs open, and my record was having 1300+ tabs open with Firefox back then. Chrome, on the other hand, would start to crap out past 100 tabs and if I left it open for a long time some tabs would almost freeze when revisited. I must, however, note two things: First, I make use of the
MemoryFox addon, which
greatly reduces memory consumption. When I had the aforementioned 1300+ tabs, Firefox was only consuming about 1.5GB of RAM. Second, I'm still using Firefox 27; I turned off auto-update when
Mozilla announced its plans to embed ads on Firefox.
I'm an easily-offended customer who can quickly abandon a product or service just because something doesn't align right with me, and I view Mozilla's change of attitude from being a staunch contributor to the open Web to considering embedding advertisements in their flagship product as a
major offence. That said, Firefox(-based browser) is the
only browser that meets my needs. I'd considered changing to something based on Chromium that isn't Google Chrome, something like
SRWare Iron, but nope―the addons and all that just don't cut it. Similarly, with the stuff I add to my browser, Firefox-based browsers often have compatibility problems (even if just very minor) with some addons.
Ergo, I stick to Firefox, which I still love; I'm just not updating. Also, earlier today, someone mentioned to me how AS slowed down his browser. He's using the latest version of Firefox, I'm sure, and there's no evading the fact that Firefox updates sometimes make it sluggish. Just saying, but if any of you is having a sluggish experience with AS, it may have something to do with the newer version of Firefox, because it's running fine here on 27.
/Two cents