The thin black line problem is resolved - the OEM (Samsung) has offered to replace the monitor with a new one with no arguments. Apparently the line is dead pixels that cannot be repaired locally, so a replacement is on the way. I neglected to mention before I am running a G4 dual mirror doors 1.42 dual gig processor. OS X 10.3.9. Sorry for bothering this great group of knowledgeable people with something not directly related to the MAC G4 computer. Michael W. Smith 5885 Portland Avenue Minneapolis, MN 55417 612-866-4044 cell: 612-616-0461