Infinite loops?

I have noticed that increasingly recently, Firefox goes into CPU hog mode on chess.com. The symptoms are that Firefox is open, say on the online games page, and it uses as much CPU as it possibly can (one core on my PC). Interface features seem to still work, but very, very slowly. It is all but impossible to use the analysis board for example. This problem is intermittent and I cannot seem to pin down the cause. Restarting Firefox with a freshly cleared cache does not help at all, unfortunately. I just found starting at the chess.com homepage was fine, but as soon as I came here, firefox was stalling again, but not for as long as on the online games page.

Has anyone else experienced this sort of behaviour?

firefox does that to me all the time which is why i refuse to use unless i absolutely have to

Don't like IE (graphics are jagged for some reason), but trying google Chrome again now. Seems fine so far.

firefox in general becomes a resource hog over time :(

Short answer, no, as long as your cooling is adequate.  (er, sorry if that sounds cyclic!)  I think you could probably run something stressful like folding on your processor almost non-stop and it would become redundant long before it died. 

And that in spite of the name.

The main downside is (1) Firefox is almost totally unresponsive in this mode (2) It's stealing resources from any other programs you are running.

Enough reason to stop me using it entirely, given that Chrome does the job fine with tiny CPU usage.

Also such bugs cost money for electricity and damage the environment.

I like Safari, no real problems*, and it's very responsive - I prefer the look of the text as well (others may disagree).  I was using Chrome for quite a while, too, and liked it too.  I dumped firefox sometime back for much the same reasons described here.

* I do experience one bug, which is that when I use conditional moves, the browser crashes when I close the pop-up window.  The moves get entered, but I have to re-open Safari every time.  Not a huge issue for me, but could get annoying if you use conditionals a lot.

Sadly, I now see that Chrome also uses maximum CPU on any online game page, just like Firefox (although it remains responsive, being better designed it would appear).

I conclude the problem is with something on the page, can't be sure what. But in my opinion it needs sorting out. What's the most efficient way to report bugs here?