Hi All, Got a Mac Mini 2012 connected to an AOC i2367FH monotor via HDMI. Since upgrading to Mavericks I'm experiencing some odd window-snapping behaviour intermittently on waking from sleep or display-sleep. Video Here I've reinstalled a new Mavericks instance, replaced the monitor and HDMI, Booted from a "Mavericks Installation USB" and it still happens. If I toggle the refresh rate it goes back to normal. Until the next time it goes wrong.. toggle again, all ok. I've also now installed M-Lion on a partition and that's ok. are saying it might be AOC needing a new driver... but I can't find any monitor drivers at all? I've a case eased with awaiting my trying a TBolt-HDMI lead to see if that helps (need to get one first) and a case open with AOC.. no response yet. Anyone got any other ideas or further diagnostics I can try? Thanks!!