Hello I have used Firefox since the old days, wayyy back. Never an issue, always worked, always performed. My Firefox (v32 I believe), automatically downloaded and applied the v33 browser and immediately, everything went wrong... First, the browser loaded but the screen was either sheet black or sheet white, then reloading (after closing the window) was informed (only via the window title as all else was block black) that Firefox couldn't see a user profile. I loaded FF with safe mode and disabled everything (list of addons at the bottom of this post), and the browser loads now and I can see content, but then after only a minute in "safe mode" firefox persistently returned with either a fatal crash or a sudden inability to find the user profile (causing exit). Reading up about possible workarounds, I eventually managed to export the Profile data (to desktop), to clear the profile data and replace data with desktop copy. Clearing the data took several attempts due to firefox display only showing black or white as stated above, but firefox then couldn't "import" profile as I can't see whats going on in the window. Eventually manually installed profile data (from desktop automatic copy) to firefox but FF still persisted in crashing to desktop and not displaying correctly if not in Safe mode. I eventually uninstalled firefox and reinstalled from scratch. The reinstall persisted with all the above mentioned issues, I did manually reinstate the FF user profile and crashing to desktop is now rare but does still happen, now it usually happens when Firefox is not the current active window. Firefox still does not display correctly unless in the "Safe Mode". Any clues or help or suggestion about why this would happen? Any way I can revert to version 32? My Addons : No Services. Appearance, default only PLUGINS: VLC plugin 2.1.3.0 Silverlight plugin 5.1.3 shockwave flash 15.0.0 Quicktime plugin 7.7.5 Java platform SE7 U67 10. Google Update (disabled) Adobe Acrobat 11.0.9 EXTENSIONS: British Dictionary (not compatible with v33!!, disabled) Colorzilla 2.8.1 cssUpdater 0.5.2 (disabled) Dust-Me Selector [for CSS] 4.1 Firebug 2.0.3 (and associated FireDiff, FirePHP, EventBug) enabling / disabling all/any of these does not (so far) change the graphical fault loading Firefox outside of Safe Mode. Any ideas? cheers P.S>As additional info: I have tried the "reset firefox" but this caused numerous little bugs with saving the profile user data. Also reseting did not fix any of the issues. Everything else on my computer works fine. No virus, no malware (Eset / MWBytes) all other programs fine, and FF was fine until V33!!