Well, it's a Pappocom paper, so it's highly unlikely - it'd have to be a printing error on the part of the paper. If you post the puzzle here we can check. Or if you go to
http://www.sudoku.com/ and click on the Solutions option on the menu, and find the given solution to this puzzle. If you have another solution, you must either have a clue number misplaced, or else have the same number somewhere in a row/column/box.