This is what happens in Mac OS X if you inadvertently rename your system folder to "System Folder" like it used to be called in OS 9. A kernel panic. When I found out what happened, I felt about the same way I used to feel about JCL errors: not threatened, self-esteem wise. Wings-Stay-On-Wings-Fall-Off. Whoever let this through at Apple is a total moron and so are all the testers and design reviewers and Steve Jobs. Speaking of linguistic anachronism: JCL stopped being used about the time self-esteem became popular.