I recently had to restore my system from TM Backup. After the restore, there's an old backup TM file in the trash which I can't remove. The principle reason I can't remove it is there's boot.efi file in there which is locked. Here's what I've tried
1. Changing the permission to read & write in the Get Info window.
This has no effect because the Locked option remains greyed out even after unlocking the permissions.
2. I've tried the advice given here: http://support.apple.com/kb/TS1402
The commands aren't accepted in Lion
3. sudo rm -rf ~/.Trash
Doesn't have any effect
4. From an earlier (2008) post about this problem, it was suggesed by Kappy to try advice from this site: http://www.thexlab.com/faqs/trash.html
Their advice basically ends up advising one of the first three things I tried.
Any other suggestions? Ten points for the winning postcard..