OK, it's awesome that we've officially hit the hardfork, but I'm having the same problem as djmuk.

On a separate topic, how is it that the difficulty of block 78992 went up by a factor of four (to 13.53539526) after the previous block, 78991 (diff 3.38384881) , took fourteen hours to find?

EDIT: Removing the bad addnodes and adding in
resulted in the error going away and the block sync bar appearing, but it's stuck at 12 blocks left (79902 downloaded)