Can't copy into my own Public folder I can't copy into my own Public folder neither with my finder nor from terminal 'sudo cp ~/temp/gyongyinek/* ~/Public/'

If I execute the above command from terminal I got this:
Operation not permitted
If I want to copy from finder then the crossed out mouse cursor appears suggesting that the operation is invalid...

This is my Public directory access flag:
drwxr-xr-x+  3 boti  staff     204 Jan 11  2012 Public

If on finder I hit Command+I then I have the following access rules:
Fetching: Read Only
Fetching: Read Only
boti(Me): Read &amp; Write
staff: Read Only
everyone: Read Only
I found the solution
The folder was locked...