Around a month ago I updated my firefox (and have done so once more since then) after being prompted, but I seem to have been downgraded to some sort of lesser version? The problem is this: suppose I have 4 tabs open, and I open a 5th. In the past, if this 5th page was taking a while to load, I could hop over to another tab and be reading something else while I wait for it. But now this is not possible: if one tab is buffering, they ALL buffer simeltaneously. Suppose I just have a simple text page open - nothing complicated. Let's say I have this very page open. If I then go to open another page, that takes a little time to load, when I switch back over to this page I'm greeted with a white page and that twirly buffering thing in the middle. I can no longer view my other tabs so long as there is one other tab loading/buffering. This did not used to be the case! If I was waiting for a page to load in the past, I could hop across to my wikipedia tab and be reading something as I wait, but now all I see is a white page with a twirly loading symbol, even if this page has already full loaded. This is really slowing down my use of the browser, especially as a student as I have to hop between multiple tabs a lot. Even if there is nothing loading, and I switch between tabs, it still has to "re-load", and this never used to be the case. It's now too slow to do college work and I often have to switch to a different browser in order to work at the pace I used to just over a month ago. Not sure why I've been downgraded...I was prompted to upgrade by firefox, but this new stalling system is borderline unusable unless I only have one tab open. Anyone else experiencing this? I'd really like to revert back to the older version of firefox if that is possible, unless there is a better way of fixing this. Thanks for your help. [See image below: the tab I have open had already completely loaded and I was reading it previously. On the next tab to the right I clicked a new link so the page had to load, and when I hopped back to the other tab it had to re-load all over again]