Font and object edge on Yosemite As a lot of people here, I updated my Maverick to Yosemite. I've a MacBook Pro 2011 (early) and a Apple Display connected with a Thunderbolt. My question is: am I the only one that see the font edge not so clear? It seems a little bit blurred but enough to be annoying. 

In particular the font are really annoying in Safari tab title, and system bar. 

BTW: I want back old font. Now.
I am using Macbook Pro 15" with Retina display and a 27" thunderbolt display. After upgrading to Yosemite the font on the macbook built-in display looks very clear, but that on the thunderbolt display looks blurry. I guess Apple did't consider the thunderbolt display users when they test the new font.