I scanned it. My initial reactions:

• Surprise that the document existed;
• TL;DR;
• Surprise at the quantity of work that had gone into it.

Alas, I totally failed to see the claimed "strange singularity at the heart of decision theory".

My favourite bit was probably the speculations about agent boundaries - starting on p.108. Alas, from my POV, no mention of the wirehead problem.

Update 2011-06-26 regarding the new version. The bit that reads:

This manuscript was cut off here, but interested readers are suggested to look at these sources for more discussion:

...seems to have been deleted, and 3 pages worth of references have been added. The document seems to have had negligible additions, though - the bit on p.108 has moved back onto page 107. There seem to be a few more extra lines at the end about how "change" is a harmful concept in decision theory.