I have encountered a strange problem while trying to change the Computer Name from the Sharing preferences. I can change the name by clicking edit but the change does not take affect. In fact, the Sharing window displays both the old and new computer name. Here's a screenshot of the problem. The old name is Tom's Computer while the new name is Macintosh. When I browse my network from another computer, the old name shows up and I get an error when I try to connect to it. Anybody have an idea about what's going on?