I woke up and Safari had mysteriously "reset" itself. All of my extensions are gone, but the history still remains. Also, I have about 7GB of free space on my HD. It slowly decreases while the computer is on - in a few hours I won't have any until I restart the computer. It's also been running slower than usual - web and processing. Thoughts? I'm running 10.12.3 EDIT: When I posted this 50 minutes ago I had 6.8 GB free. I just checked and had 3.4. I restarted the computer and had 7.8 free. I noticed that many items in Keychain are missing, too.