I've noticed lately FireFox has been stalling when it's in "idle". I put "idle" in quotes cause it's not a true idle where I'm not doing anything at all. Basically...it will stall if I don't constantly move the mouse, be typing something, or scrolling. If I doing something like downloading...which isn't a true idle cause browser is "supposed" to be receiving data and such, it stalls!!! In the stall it halts the action it was supposed to be doing such as the download. Starts right up if I move the mouse. I noticed this also with my add on clock to this browser...seconds stop till I move the mouse, scroll, or type. When I do move something physically the time goes to the correct time (skips what it missed in the stall). I guess to put it simple, the browser stalls unless I'm doing physical actions and stalls in all other times. It's like it needs me to constantly keep moving something physically to keep it "awake." I have tried disabling hardware accelerator, and reset Firefox. I checked all systems which are up to date. Virus, spyware, malware scanned. Only have 2 extentions enabled...a clock and mouse zoom. I have Windows 7. Recently was updated 2 days ago. This problem started with the update of Firefox to version 25. IE browser works fine (although I don't care for that browser...so hope this issue with Firefox can be fixed). Also all desktop and other computer programs work fine...including other video/media on computer. So I know the issue has got to be with FireFox. It is VERY annoying. Any ideas??? Thanks!!