The Paypal live site is due to undergo scheduled maintenance tomorrow morning. According to their notification, it shouldn't impact users significantly but it may cause some slow performance or some features to be temporarily unavailable. Please contact Paypal if you have any queries regarding this.
http://www.pdncommunity.com/pdn/blog...ge.id=178#M178
http://www.pdncommunity.com/pdn/blog...ge.id=178#M178