I hope is not! In fact I bought this new macbook because my early 2011 one got a graphic card problem that Apple is not recognizing, while the affected computers are counted by thousands.
It is strange because it only seems to happen with PM, and I intensively use other graphic software (PS, LR, PTGui, Panotour Pro, Final Cut Pro, Photomatix, etc).
Unfortunately Apple support in Latin America is really bad, so I will have to google on this.
Thanks!
Pablo