YES, that is the sign of a scanner is going bad. If you keep scanning, it may go away, or it may get worse. It varies. (It may also get worse and THEN go away)
I'm on scanner #4, for a while this one was putting lines in the middle column, then it switched to the right column, then the left...really frustrating, but I adapted by scanning 6 cards at a time until it went away. It did, after about a month. Knock on wood, it hasn't done it in any column recently.
With that said I will probably get a new one next year sometime. Hopefully this one will keep working properly and I won't have to for a long while.
VERY slow trading due to health problems. Not transferrable so safe to trade with, just moving is painful and can't always access the cards.
Cardboard History My COMC
New Collection Website: Cardboard History Gallery (Still under construction)
Tips on how to make your scans look like the card does in hand (No more washed out, fuzzy scans!):