Okay, so I've seen a lot of issues with third party apps and minor changes with El Capitan, but I've had a completely different experience. I first upgraded from Yosemite, then did a clean install... with the same result. The clean install just has web browsers installed, nothing special at all. Everything seems to be broken. Pages in Safari will regularly cause the tab to freeze where it cannot even be closed. Chrome (and Chrome Canary) take minutes to open sometimes, other times open instantly. Messages gets out of sync and won't show new messages as they come in. Third party apps often do the same thing - they'll freeze and never open, and other times open instantly and work fine. What gives? This Macbook is a MacBook Pro (15-inch, Mid 2010) - 8GB of RAM, fast SSD, etc. I use it as a backup but tested El Capitan before upgrading my primary machine. How am I having so many issues with basic stuff like Safari when it seems nobody else is having these issues?