I have a late 2009 iMac (10,1) that is suddenly experiencing graphical issues, most noticeably with Mission Control. Before two days ago, the windows in Mission Control zoomed in and out perfectly. Suddenly, they have stopped zooming and instead the graphic just jumps from one position to the other. Strangely, full-screen apps zoom in and out without any issue, it is only the windows on the desktop.
Does anyone have any ideas. It worked fine on 10.7.1 last week. This only just started. It begins occurs immediately after startup, even if the only window open is the Finder. Restarts/PRAM/Disk Utility have all been tried. Resume has been unchecked. I am out of ideas and any assistance would be appreciated.
Does anyone have any ideas. It worked fine on 10.7.1 last week. This only just started. It begins occurs immediately after startup, even if the only window open is the Finder. Restarts/PRAM/Disk Utility have all been tried. Resume has been unchecked. I am out of ideas and any assistance would be appreciated.