No worries, we're here all week and we've already answered your ticket.
These errors only come up when PayPal itself is down... I still haven't found any announcements from PayPal but the reason they are down is a DDoS attack on Dyn DNS, a major domain name provider that serves PayPal and other sites. I've found the update thread for Dyn itself and posted it in our service status forum here:
Surprisingly few people have contacted us about the issue so far so I'm not sure how many people are being impacted by the outage. It's still possible to connect to PayPal to checkout after repeat tries, but these connection errors are still occurring and are also impacting other major sites like Amazon and Netflix.