I've had my Mini since launch. On two occasions, after reboot, I've noticed flickering every few seconds on the bottom 1/4 of my screen. The second episode also seemed to have bright pixels that showed up randomly in the top 3/4 of the screen. Checked connections while Mac was on - I'm using the included HDMI to DVI connector. Monitor is same one I've use with my Macbook for years. Both times it was fixed with a restart. Not sure what this means or if anyone else has had it happen. If it was occurring more regularly, I would use the display port to DVI connector that I bought by mistake and try to see if that made a difference...