Just tried to log into my Gmail account and I received this error message. 30 seconds later it did work again. Since I took the screenshot, I wanted to post it anyhow. But I also googled "gmail server error" and found some other people (here and here) who recently had similar problems. Does anybody have statistics about the reliability of webmail services such as Yahoo!Mail, Hotmail or Gmail? I recently discussed with a colleague the top ten reasons for users to churn away from a particular Internet service, and we had the chance to go over some survey data where in fact "ability to easily log in or download email" was named a top ten criteria for staying with an email service provider (or not, for that matter). It would be interesting to know if broader data exists, to see if there are any particular clusters among webmail users that allow to draw segments.