A friend of mine has a G1G1 XO-1 that he got Dec 2007. I help him to install reasonably-up-to-date software - his system currently has q2e43e and os11. [BTW, he normally does not power off his XO, but leaves it sit forever with the lid closed and AC plugged in - with papers stacked on top. I've seen his system be warm to the touch.]
It is quite rare that I observe his XO being booted -- but I do not recall ever seeing the "unsupported nodetype e009" message. For the fun of it, I added the four lines at the beginning of his olpc.fth that caused the XO to be overclocked (to now 462 Mhz) -- and now I *did* see several of those messages while booting his XO. [Neither those messages, nor the overclocking, appeared to affect the operation of the XO. (My reason for applying a mild overclock was that Timidity was running the default-speed XO at more than 85% average CPU utilization - I wanted to create some "head room" by speeding up the CPU).]
IIRC, Yioryos has his XO-1 overclocked. As the above-described experience shows, it is likely that the "unsupported nodetype e009" message is being brought on by the use of overclocking.
mikus