trouble syncing after ios5 update

[cville]

For some reason the vodcasts (MPEG-4 video files) on itunes will not sync shortly after I updated to ios5 (I get these vodcasts via RSS feed from my college institution, no problems before the update) -- also after I updated the missing album artwork on itunes, the new artwork is not syncing as well -- I have a MBP running version 10.6.8 & an ipad2.
Has anyone run into this problem..? Thanks!