For the last two weeks or so, every time I open Firefox I get install tabs for each of my add-ons, and have to go through them all to get a session going. So basically it is for some reason not saving the add-on information. I only have a half dozen or so, but it's still annoying when I haven't even had my coffee yet. The first couple of times I thought that there must have been a Firefox upgrade that required this, but I don't think that makes sense when it keeps happening. The only way to avoid this is by just setting the computer to sleep and leaving Firefox open, but I'm an old (in every sense) tech support person and still have a daily shut down and restart ingrained in my psyche. I did go into the add-on manager and completely removed a couple that I no longer use. There were also three that were disabled because they couldn't be verified for Firefox, and I can't actually remove those. I should have saved a screen shot, but haven't yet. I'll do this the next time it happens, probably tomorrow morning.