I think I read somewhere that the OCN might get messed up in some similar manner (?), which is of course influencing the corruption. Not sure about the details, though. Maybe someone snows in and clears this issue.
FWIW, I continued playing until turn 70 or so, playing with C3C default rules, all civs randomly chosen, deity level, got apparently the same start as punkbass (sorta cramped starting loc I'd say). I switched from the granny-pre-build (that whole lot of 6 shields anyways) to a warrior, but an approaching AI warrior stack eventually killed the barbs. Researched pottery from the start, then heading to philo since the RNG gave me Greek traits. I was not the first to writing, but won the philo gambit (>CoL). Some tech bazar here, some trading there and my civ is even more advanced than some AI. Research speed seems indeed over the top for a huge map. The map size played before was either large [epic, with randomly picked Greeks as well

] or standard (a PBEM started on a handmade map).
The barb thing was like Tomoyo said. In fact, I hoped for a settler showing up...
Here's 1375bc. If you look closely, you can see my 'exploring gambit' didn't work out either...
Well, at least we rule the wide oceans!
http://www.civfanatics.net/uploads8/grills002.JPG