Update
I've tried changing to another keyboard and that still doesn't sort the problem out the keyboard shortcuts still behave very unresponsive in photoshop. Also tried resetting the preferences folder that does nothing.
CS6 says it's up to date does that mean i'm screwed? Why did my first mac have to be a retina one.
Wacom have suggested this:
http://helpx.adobe.com/photoshop/kb/photoshop-menus-turn-white-mac.html
Now obviously solution one I can't do because I have Yosemite. Could anyone tell me what this white window plugin actually does? and whether it would benefit me.