[mrcalzone]

I see the same thing. Pingdom reports higher response-time, but no downtime (meaning no alert). Also no alerts from AWS Cloudwatch. I first became aware of the issue when internal api-tests started failing at 9:56am CET. I see users accessing the site, but I don't know how many it's failing for.

[1SaltwaterC]

No issues in the internal EC2 network. At least, none that I could find. I guess that's the reason why ELB doesn't shift any traffic. The whole issue seems to be on the Internet facing network. Failing routers, maybe.

Pingdom still claims 100% uptime, but New Relic (which includes an equivalent pinging service) reports downtime from time to time. Around 25 timeout alerts into the last couple of hours.