This worked for me. You might want to copy and paste this to TextEdit and print it out.
1) Move iTunes onto the Desktop.
2) Run Disk Utility
3) Go to HD>Library>Receipts and trash all iTunes .pkg files EXCEPT for iTunesX.pkg and iTunesPhoneDriver.pkg
4) empty Trash.
5) move iTune from Desktop back to 'Applications'.
Voila! You should now be able to repair permissions again.
Let me know how you got on.
P
I am running a Powerbook G4 with OSX 10.3.9, When I run my Disk Utility I get an error message "Disk Utility internal error. Disk Utility has lost its connection with the Disk Management Tool and cannot continue. Please quit and relaunch. Can't get it to run to repair permissions. Thanks

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