Thank you very much for your reply.
I also got my T5010 back from Service Center with more-or-less the same reply,
except the Fujitsu's guy said he updated the BIOS (seemed to be a generic version of BIOS and I lost my system model in BIOS EEPROM, he didn't notice it, later I have to ask him to reinput the model, goodness he inputted incomplete data, too lazy to take my T5010 back again) and and re-applied the thermal paste.
My CPUs temperatures did drop at least 10 degrees, but still it tends to be warm and it refuses to go below 50 deg. C. My HDD often reached 60 deg. C, which is a critical temperature for HDD, let alone the discomfort it makes. My T5010 literally become a miniature heater when I'm using it on Slate mode. The heat distribution is exactly the same as the one showed on your thermal photo. The HDD is located exactly beneath the left armrest btw, that's why it's so hot right there) Anyway my ambient temperature should be similar to yours, here in Jakarta.
Funny enough, Fujitsu Indonesia said they're going to ask for clarification from Singapore branch, well, it seems I've already got the answer, eh?
Just FYI, I've been asking many T5010 users over the Internet regarding this issue, and they said they barely feel heat on their T5010.(most got European build FWIW).
T5010 sold in Indonesia supposed to be the same with the one sold in Singapore (imported), could it be they both were a bad batch with whatever unknown problem?