facebook not working after most recent FF update

After the most recent FF update, I can no longer upload pictures from my laptop to FB. I cannot see replies to posts in the main feeds. I have to go to the individual post pages to see them. Upon trying to sign into FB I often now get a message that says the feature is not working, but I click on it again and am able to log in. The feeds are taking a long time to load - I can see 3-4 posts and then icons that show the rest of the feed is trying to load, I do not have AVG or the other thing (bitdefender maybe, or something like that) others have been having problems with, that was resolved in a recent 'FB not working' thread -- that was supposedly solved with a recent update. A few minutes ago my laptop shut down while I was on FB. I did all of the suggestions regarding clearing the cache, cookies, etc. when I first noticed the problem so there is still a big problem with FB. I did report my inability to upload pictures directly to FB but I don't have any replies from them. Unrelated, I am sure, but my bookmarks were gone again this morning, for like the 24th time and I had to do the profile folder fix to get them back. I did not cache or other cleaning before I shut my computer down last night. It last happened a few days ago, unrelated to the cache etc cleaning after I noticed the FB problem. I have Norton antivirus and FF is synced to my cell phone but I prefer using my laptop for all internet activity because the screen is obviously bigger. I do not want to use another browser because of security issues. Thank you.