Mac Quicksilver, 1.1 GB ram
OS 10.4.11 TIGER
iTunes 9.0.3
1) I had some problems after changing my acct. name, then changing it back again. I thought it was all sorted out, but then started getting an error message when I try to rip CDs in iTunes: You don't have write access for your iTunes Media folder or a folder within it. To change ...
I tried Get Info & have RW permission, so I don't know what to do about that.
2) Other than ripping CDs, iTunes seemed to be working fine however after a week of the above problem, it has developed something new that may be related. I can no longer use Get Info within iTunes to correct or add to entries about the albums like composer, tracks, disk, etc Perhaps that is another RW permission issue.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic