No, I don't think so. Using my mouse, I click on the white square, hit a letter and the square turns black. Not only that, sometimes is will also turn a different square black as well. But it is usually very hard to see which squares have turned. I've been using the program for about a month and just began to have this problem a couple of days ago. It's creating havoc. I'll wait a few days and then might contact Anton.
