People unable to get work done w/ Adobe CS (i.e. professionally) is what I would call massive. The same goes for people trying to do video editing and getting crazy ghosting issues on not inexpensive iMacs... On my rMBP w/ HS I've had to reduce the transparency in order to minimize ghosting, but I still get constant dimming and lighting (dim, light, dim, light) if watching a video in full screen on any browser from any source I try... if I don't do full screen, the automatic dimming / lighting doesn't happen. This started the very day I upgraded to HS...!