Hi,
I'm running the nettop PC based on DN2800MT (NM10 chipset), 4GB RAM (DDR3 1066MHz natively), none overclocked. OS is Ubuntu 12.04.
500GB SATAII 3,5" harddrive, miniPCI-e Wifi card, that's all.
After a few minutes the NM10 gets literally hot, I cannot touch it. It does not matter it has the onboard GPU turned on or off. Yesterday I upgraded BIOS to 0155, still the same. Interestingly, this chip does not have any radiator to discharge the heat faster.
Do your DN2800MT have the same?