Hi all, I updated my Macbook Pro 13" Late 2011, 2.7 GHz Intel Core i7 to Yosemite as soon as it came out and it was fantastic. Everything was faster, sharper and more beautiful. Unfortunately, in the last month or so, I have noticed my laptop becoming increasingly slow and the battery never lasts over 1 and a half hours either. I checked activity monitor and found that all my memory is being used and even 'virtual memory' is taking another 4.26gb. I was wondering if you would know of any reason that virtual memory is being used and how to get my laptop back to normal. Your help is much appreciated!