Brasero,
I run updater with the -compare switch to check, whether there are updates or not. It downloads only the registry and then prints out files that needs to be updated. I know which files I have changed, so I can ignore updates to these files.
Also I have changed the updaterconfig.xml file to download whole zip files. It works faster and does not download the same file over and over again. I\'m not sure does it add extra traffic to the server or not.