Yes, that's the one! I always seem to get stuck on the stage where the little stick-guys start getting backed up by giants. By that point in the game, my mouse hand is starting to lock up, and I'm losing much-needed units because of not having enough funds to upkeep them all. Because you can't pick up giants with the mouse (or at least, I haven't been able to), once a giant gets onto the screen, I am forced to watch helplessly as they proceed to trash all my hard work.