[dnanian]

The wallpaper is likely an alias that is not resolving as expected - simply repoint to that.

The IB issue was because you had bad (deleted) entries in your Login Items (again, aliases) that resolved to actual files.

The broken iTunes references, well, I'm not sure, but it sounds like the same thing - a bad alias to a file that was moved/different/deleted.

In fact, all of these seem to be that to me...