"Discovered it can't connect to my 802.11g-only wifi. Had to switch to mixed mode for it to work."
Call Samsung and have them walk you through router and such settings. The quote above is a router change, not a printer/driver change.
I have not been able to connect to the printer via wireless router. The failure message was "Invalid Network Security." I am pretty sure the network password was entered correctly. The attempts were made using a USB cable as well as without a cable. Both failed. It seemed the PC was communicating with the printer but the printer was not able to be allowed access to my WIFI router. However, I have successfully set up a few devices, including a Samsung TV, to the WIFI network at home. Not sure why it does not work for the printer. Need help.