This is a problem that seems to have continued through the most recent version of Firefox, and it's actually a bit worse than the previous iteration of the browser. The problem continues to be that simply scrolling through a Twitter feed for any length of time - and it seems to be particularly true when the browser tries to load embedded videos and gifs - gets you a screen that freezes, which can usually be corrected temporarily by "restoring down" and then "maximizing. Sometimes, when the browser screen doesn't fully freeze and you can see scroll bar moving up and down while seeming to drag lower graphics to the top of the newer section of page, that little temporary fixes works. Is there any way to fix this? I've tried safe mode and all that jazz. I'm running Classic Theme Restorer as my main extension. I notice that the grey space in the tab and menus bar can sometimes mess up (i.e. looks like a ghost tab color where no tab is open). On top of this, embedded twitter videos often fail for no reason on a Twitter feed. What kind of questions do you have for me that could perhaps help me remedy this constant situation? Anyone else experience really sloppy rendering of Twitter pages by Firefox? All of my graphic drivers are up to date, my firefox version is the most recent, all plugins (which are set to "ask") are also up to date. Currently, graphic hardware acceleration is turned off, though, I haven't really noticed any difference with this problem when it's turned on.