That is the first line in the Hippocratic Oath. All doctors have to swear to it. All software developers should too. I made the mistake of letting Firefox on KUbuntu update. It obliterated all my tabs and all my history. There's nothing left. I had a lot of tabs open with intent to use them to update some astronomy instructional activities. I don't know if I'll be able to find them again. I don't really have a question except to ask: What fresh hell is this? Is it really that hard to just leave things the hell alone? I'm afraid to ever update Firefox again. If everything else wasn't based on Chromium, I'd be out of here. Also, it looks like something out of Windows 7. It's all gone. It's a wonder you didn't delete all my bookmarks while you were at it.