ok, thanks. I've submitted the ticket.
as i said, is not a bug but if you need to record a line in the database for each pageview... (and i have more than 500.000 pageview/month) you have to store too much data!!! today my table is 70.6Mb!!! too much. each line is like this one:
entry_date ip_address user_agent advertiser_id campaign_id banner_id type
2007-12-22 19:21:40 1379744489 Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1;... 1 2 1 impressions
629.575 of these lines recorded in 20 days. weight 70 mb. on my server.
Better, at the moment is the system used in this component:
http://www.dinoporcaro.it/where it doesn't store a line for each impression or pageview but the total of the impressions/clicks. ok, it doesn't store others information but it saves space a lot of space...
AD Agency, in my opinion is a very good component! thanks very much!!
Marco