I never have had Chase Paymentech or Bank of America's system go down; but PayPal has gone down many times. Of course since I'm a pro, I have a queue setup for

I never have had Chase Paymentech or Bank of America's system go down; but PayPal has gone down many times. Of course since I'm a pro, I have a queue setup for processing transactions and a backup processor, so the users experienced no problems.