Although you might have plenty of experience in handling ML-2161 drivers, there still is a lot of time involved in this update process. It can seem impossible to find the right ML-2161 driver directly on the Samsung's or related manufacturer's website for your Laser Printer. The excellent thing is that even though your Laser Printer problem persists, you can fix it by installing the updated driver.
Device drivers fail intermittently and inexplicably without any apparent reason. ML-2161 errors can be rooted in an outdated or corrupted device driver. People avoid updating ML-2161 drivers mainly because they are afraid that something will get messed up.