>>>Firefox 15.0.1 MSSE. Windows Firewall. If a page is loading slowly if I click the X on address bar to stop load and then immediatlely click the reload the page loads instantly. Happens on sites I visit all the time, newspapers, Code Project, that kind of stuff.
>>>
>>>Thoughts?
>>
>>I've got the same config, I'm seeing something similar on a few other sites but it's most obvious on this one.
>>
>>We're not alone:
>>http://support.mozilla.org/en-US/questions/936761
>>http://support.mozilla.org/en-US/questions/936510
>>http://techdows.com/2012/08/firefox-15-slow-vs-firefox-14.html
>>
>>I Googled [firefox 15 slow to load]
>>
>>I'm not inclined to mess with settings, I'm hoping a point update to FireFox will fix it.
>
>Interesting. The thing that puzzles me is not the slow load, but that cancelling and reloading loads instantly.

These days the competition between browsers for fastest performance is fierce. My guess is FireFox uses a lot of esoteric optimizations for HTTP downloading and hardware-assisted page rendering, and that one or more of them isn't working exactly as expected under all conditions.

Or, as the Mozilla threads imply, maybe it's a problem with Flash. Fairly recently, FireFox sandboxed Flash so if the latter crashes it doesn't take the whole browser down with it (although on my system the browser is frozen for 20 - 30 seconds before it tells me Flash crashed). Over the last 3 or 4 months, Flash has crashed more often for me than in the prior several years.