Can't change Folder title

[baba]

This is strange. All of a sudden I am unable to rename a Folder from untitled folder to anything. I can highlight it, but nothing happens when I try to type in a new title. I tried it on the Desktop and Finder. Any ideas? It would be prety hard to find anything if everything was in folders titled 'untitled'.

 

[Giaguara]

Where is that folder located? I see Thumbnails folder next to it - so not in a CD or Windows share, is it?

Restart finder (apple-alt-esc, and select finder from the list) (maybe even 2-3 times if it doesn't seem to restart otherwise).

If you get apple-i from that folder what permissions does it give for you?
Can you rename other folders?