Mac OS X Lion was released last month in the Mac App Store, but unfortunately many users they had problems quite large with their own Macs after installing the new operating system. Now I will talk about iMac owners who have a rather disturbing problem related to the graphics card. Notice in the images in this article that on the icons in the task switcher and on those in the dock, artifacts appear that normally should not be there. The iMac on which the screenshots were taken has a 7 GHz Intel i3.4 processor and an AMD Radeon HD 6970M video card.
The problem experienced by the user was usually solved by resetting the iMac, but after a period of time this trick didn't work either and unfortunately AppleCare didn't find a solution for his problem either. Of course, the iMac has the latest updates available from Apple, so it cannot be about some old drivers that have problems. If you experience similar problems, then maybe it would be better to take your iMac to one of the 2 services authorized by Apple in Romania.
