I have a mid 2012 Macbook Pro with the i7 processor and 8GB of ram, and am currently running OS Mavericks. I have heard several stories of problems with Yosemite and wondered if anyone here could give any advice on upgrading to Yosemite or not. I figure this will probably be the last OS version that my current machine will be able to accept. As I recall I think the mid 2012's just barely made the cut-off for Yosemite. Anyway are there still any issues with wi-fi not working correctly or other problems. Any advice would be greatly appreciated.