I'm not even sure what's going on, I decided to have a go with Mac on a whim. I have the following apps installed in my Mac: Skype (newest version) Silhouette Design Studio Wondershare DVD creator Vuze Recently, I've been having issues with what I assume are Mac's version of app crash. I try to open 1 of these 4 apps and my screen flashes black, then flashes black and white lines (maybe a pixel in width each line), then blanks to blue. When the screen comes back up these apps have shut down. It even shuts down Safari which doesn't cause this issue on opening. I have tried restart, disk repair, disk permission repair, uninstall/reinstall. Still issues. What gives?