Does the system still have problems if you're not overclocking?
Slow boot time and snail-like performance. I'm not overclocking manually, perhaps some Intel utility (like Speed Boost) is doing it for me. No sign of it in BIOS though.
Does the system still overheat in sleep? How did you troubleshoot the overheating issue?
It doesn't. Heating + Overall slow performance + Event log (4 enries on the screenshot). Still it's just a guess.
Have you updated your BIOS?
Yes, latest version.
Have you communicated with the manufacturer to see if this is a warranty issue?
Purchased through Ebay, waiting for a copy of receipt. Haven't contacted ASUS yet.
What is IEST?
Sorry, EIST x-\. Intel SpeedStep.