The Bugzero server log file, bugzero.log should be located in this directory.
If you found this file is not here, or the file is not updated (i.e., no new entries
are added), then it means either the file is not writable or it can not be found
by the application server.

1. If bugzero.log is not writable to the app server owner, as it may occur on
   Unix/Linux OS, you need make it writable with chmod.

2. If bugzero is absent or not updated, as in the case the application server can
   not find the location of the file, you need add a system.data.dir entry in 
   system.properties.   Note that, if you need create a bugzero.war war file
   to deploy, then you need make the change in system.properties before you create
   the war. Examples are provided there.
