Client-IP-Address in detail files

hello, I have recently upgraded from CVS version as of 2005-02-19 with the one from 2005-12-17 and I no longer get the "Client-IP-Address" attribute in the files produced by the detail module. on the other hand the "Client-IP-Address" attribute is expanded correctly in sql querys. is there something different ? how can I add "Client-IP-Address" attribute back to the detail files ? and something else. where can I find the syntax of the "listen" directive ? (to remove bind_address and port directives) thanks, Razvan Radu