have you tried syncing to just the following 2 nodes?:
irc=0
dns=0
connect=107.170.217.4
connect=107.170.89.103
I realized I had the same error on my wallet, through this in the config and re-downloaded blockchain again. All is good, no more error.
Thanks for posting!
Sync'd up and then flipped those over to simple addnode to allow others to attach.
BTW, I just announced out on Twitter that doabitofgood.com now has a working Mac OS X build workstation !!
-dvd