Hello all, weird one for ya.
I'm running CC on Windows 7 Home Premium (64-bit), an HP Pavilion G laptop, AMD A6 1.5GHz, 4GB ram.
I just upgraded to CC at home after beginning use at work, and it is completely unusable because the interface is MASSIVE. See the screenshot below. It is not a resolution setting (notice the task bar and other windows behind PS coming in fine). I've also installed After effects and Illustrator, both of which look fine.