Some good news for me so far. I updated to 10.2.2 this morning and my intermittent WiFi issue may be fixed. I say this because i am getting instant lock on WiFi when I wake my computer. I had grown used to the little WiFi symbol doing a 20-30 second hunt since I first installed Yosemite. I hope all of you with these problems notice the fix. P.S. If something else IS broken, please don't tell me. P.S. P.S. Spoke too soon. A note just popped up telling me my Apple keyboard batteries are low. Yosemite update ate up my keyboard batteries! I know this because i just put in fresh ones last May and its only January.