Still has that same issue but a few days later Im having some pretty bad software failures. Then I installed the newest update (10.10.1) after maybe a day of its release.
The small issue I noticed was anything like an address bar in the mac os would freeze that app for a few seconds, then all of the sudden whatever I typed would magically be there, and I would have to wait for it to catch up. So heres the problem, My mac (iMac (27-inch, Mid 2011)) has been having some slight issues since yosemite but now its gotten bad.