Occasional display glitches on a new Mac Mini

I'm running a new Mac Mini with a Samsung S27A850D 2560x1440 monitor on the DisplayPort and a 1080p panel on the HDMI, and I'm wondering whether the issues I'm having are just minor OS glitches or actually something more serious. I haven't had any crashes or program issues, but sometimes when I wake the machine it seems to have problems with display settings - the resolution on the main monitor changed a couple of times, my windows were rearranged once, the Finder windows didn't remember the size I'd set, and this morning my wallpaper disappeared (although it was still selected in settings). Nothing critical, but all annoying.
Generally when the display does wake up, it seems like the Mac is reconfiguring it - a flash of desktop, followed by a pale blue screen for a second or two, then back to desktop. Any suggestions?

Hi Martin, the Mini only has Thuberbolt for Displays...
http://en.wikipedia.org/wiki/Thunderbolt_(interface)
Though that article says...
This makes the system backward compatible with existing DisplayPort hardware upstream of the driver. A single Thunderbolt port supports hubs as well as a daisy chain of up to seven Thunderbolt devices; up to two of these devices may be high-resolution displays using DisplayPort.[6] Existing Mini DisplayPort adapters for DVI, dual-link DVI, HDMI, and VGA are compatible with Thunderbolt, allowing backwards compatibility and no loss of functionality compared to Mini Displayport.
I cant find any!
http://store.apple.com/us/configure/MC816LL/A?

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Hi Martin, the Mini only has Thuberbolt for Displays...
http://en.wikipedia.org/wiki/Thunderbolt_(interface)
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Occasional display glitches on a new Mac Mini

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