I'll also be interested to hear about the symposium. And I think it would be interesting to check out the xmrv-mito dsyfunction connections, but I can't help remembering the large numbers of PWCs who have not tested positive for xmrv, but still have raging symptoms.
Nina, over at Hidden Story there has been some discussion, on and off, about forms of carnitine. As best as I can gather, some people respond better to l-carnitine-fumarate, and some people respond better to acetyl-l-carnitine. So far I haven't found any difference between the two, so I use the cheaper acetyl-l-carnitine. Since I'm on the methylation protocol, which involves a number of things, I'm not sure how accurate this reading is, and I may tinker with it down the line. But the consensus seems to be that it's individual chemistry that makes one form better than another; you may just have to try each of them and see.
For myself, I have to say that massive doses of ubiquinone/CoQ10 are really helping my OI and PEM (not gone but significantly reduced, and this only after a few trials a couple of weeks long). I started taking 200 mg 2x a day, and that was what made the real difference. I was a little afraid this was an excessive dose, but did find at least one website which recommended taking 200-400mg for heart conditions, where repair is required, not just maintenance. I'm not sure what effect it has on my mitochondria but it must be something because my energy level is definitely better. I'm not instantly healed, but being able to plan and do stuff, even in a mild floppy kind of way, is much better than never knowing when I'll collapse.