Forums / Cotonti / Extensions / Support / Page Archive outputs everything?

Thanks for that, that was really usefull and has helped me halfway. This is the callback I made to my archive:

{PHP|pagearchive('files','monthly','pagearchive','1','12','desc','system','files_units;files_missions')}

Which seems to work fine in the main list (I tested this by adding only 1 file to one cat and it outputs only that specific month to be able to choose from), however when I click the "months" link it will again output all pages of all categories in that particular month, including system pages (system).
This is the url it gives me when I click on that month: http://www.mydomain.com/index.php?e=page&c=archives&year=2012&month=8

I have a stucture, really simple:
- news (with some subsections)
- files (with some subsections)
- documentation (with some subsections)
- system (no subsections)