Krytone - please make your password filter, like, 500% less strict.
Also had the same issue as everyone else where doing account-creation-on-checkout did not work. Kept asking for a valid email address, but there was no email field aside from the paypal one (which was entered validly). Had to back out, create an account, then check out again.
I love your caps man but damn that site was frustrating to work through.