NUC5i5RYK + 8Gb (1.35V Corsair) + 480Gb SSD (Crucial M2)
Updated to latest BIOS, then installed Ubuntu 15.04
Seemed to work very well.
Suspended it last night (not first time) and this morning it wouldn't wake up (orange suspend LED just kept flashing). Tried 4-second button press, tried different mouse and keyboard, nothing. Eventually pulled the power cord, now it won't do anything - no boot at all.
What to do? I have seen older NUCs had issues with Ubuntu 14.02 - but this is latest BIOS and Ubuntu 15.04.