Coverflow really slow and duplicated photo library after updating

Hi!, I've been having these 2 issues stated in the titled since I updated my iPhone 4 yesterday after many "3200" errors. When I could finally pass the "Unpacking process", and just before finishing the update, I got a weird error (if I remember correctly it was something like -2 or so). I didn't pay much attention to it because my phone booted normally.

After that I configured the iOS5 pre-settings, and for my surprise, any of my apps, videos or music weren't there. I connected my device again, resynced and hopefully, the restore option popped up, and it went smooth with no errors. The first thing I noted was that some of my albums were lacking the cover art. I connected again and found that in itunes, my songs displayed the cover art correctly, but in the iphone they didn't. I replaced the missing covers and when checked the cover-flow, it was really slow! it is not fluid and freezes my device. What could it be? I think it's something to do with the cache or something...

And the other issue is more simple: after restoring, I got an extra folder called "Pictures" which contains the exact same pictures I sync from my computer (they are normally in the "Photo Library") How can I sort out my pictures?

PS: Here is a video I uploaded showing the 1st issue: http://www.youtube.com/watch?v=tcAEuN6tDvs please note the last cover I show in the video, some of the covers displays as shown (glossy pixelated, don't know if it got something to do with the issue)

Thanks!