iMac freezes after upgrading to El Capitan
I have a 2010 iMac that I recently upgraded to El Capitan (Version 10.11.1). Ever since I upgraded, the computer inexplicably freezes (spinning beach ball) on a regular basis. I have to do a hard restart every time. I am not running Outlook (I read that some people with Outlook had a similar problem). Any ideas on what might be causing the problem?
iMac (27-inch Mid 2010), OS X El Capitan (10.11.1)