I have a site developed in MOSS2007. where can I see the list of web parts that are closed and the user name who closed that web parts i.e. (ClosedBy).
Or else, if a particular web part is closed, how can I get to know that web part is closed by whom?
You can only see that the web part has been closed and you can restore it from the closed web parts gallery (when you open the web part addition window, just click on Advanced at the bottom and then select the first gallery in the pane) You cannot know who closed the web part. If you do not want people to close web part, just take away this permission.