I have a file called /Users/PortDetect.log on my MacBook Pro, with contents like
Wed Nov 25 18:22:42 2009
-- PortDetect started...
Wed Nov 25 18:23:19 2009
-- PortDetect started...
Who is making this log file? It is in a rather weird location, so I am assuming that it is not something that is part of the OS.