downgrade printer driver my printer (it is samsung ml 1640, if that matters) exhibits random failures since updating its software. the update went through apple software update. it worked fine before update. so, obvious fix would be uninstalling the offending package, i suppose. how can this be achieved? i must confess i have no clue... i'm running os x 10.6.6 on a 2006 macbook.

thanks
Usually, the most surefire way to get a specific printer driver is to download it from the manufacturer's website.

For your printer, drivers can be found here. It says they haven't been updated since 2009, so you'll probably be going back to the old version.
(Note: Of course, this will restore the functionality of whatever version of the driver you're installing. It may break things or it may fix them depending on how good that particular driver is.)