I haven't had any software problems in XP, unlike many other reviewers, but I always make a point of minimum installations. However, the dictionary in the game is bad -- in particular, it does *not* use the latest Official Dictionary (4th edition). To take one example, the word QI and the plural QIS are not available in this game, and those are important Q-without-U words for serious Scrabble.I wouldn't mind that fault if the software allowed you to add words to the dictionary or to override computer challenges. Alas, neither option is available so it's critical that the dictionary be right. But the dictionary is wrong. So the game is wrong. It's not Scrabble.