Ever since I updated to OS X El Capitan about a week ago on my MacBook Pro 2011 with 8GB ram 1TB hard drive, I haven't been able to do anything. Everything opens really slow, or doesn't open at all, keep getting spinning beach ball of death and I get errors saying cannot open because app is not responding. I can't even open Firefox at all. And when Safari opens after about a minute, it just stays blank and won't load any websites. Also spotlight won't search anything at all either. This has never happened until I updated to OS X El Capitan! Can someone please help?