i don't see how time could move differently on the island. i thought it could be possible before i saw the flashforwards. its what...december 2004 on the island, and April 2007 in the flashforwards or there abouts? the only way for time to move differently on the island would be for the losties to come back to the real world, in 2007, and miss a year or two of their life. or they had to go back in time to hit 2007. but i'm thinking that it is all real time on the island. they may end up being there for about a year, then off the island for a year before we saw jack's flashforward. either way, if time was different synching up again would be a pain.