Iphone 4 sync with iTunes

While syncing my new iPhone 4 with iTunes, it hangs up while "deleting photos from iPhone". It hung up for about an hour the first time - so I tried again and it's been nearly an hour again. I took about 4 videos last night (about 5 minutes each): since the videos are stored in photos, I wonder if this has something to do with it - maybe it's not locked up, maybe it's taking forever due to the videos. Any suggestions?