[snip] >As far as finding duplicates [call me blind, but I don't see it], it appears >that all your script does, as is, is list the LAST record from your input >file for each specific $user,$date combination. It doesn't do anything about >duplicate data. Because of the way the information is collected, duplicates can be caught without checking the entire record- anything with the same userID and date will be the same throughout. Although I plan to make things more accurate than that anyway, it really isn't necessary to do so. - Strider PS- call ME stupid, but what does "if ! $data{ $user }{ $date }++;" do? ***** Want to unsubscribe from this list? ***** Send mail with body "unsubscribe" to mac-perl-request@iis.ee.ethz.ch