Dear valued user,
You have reached the error page for the error page...
You win!!
Sometimes even the error pages can't be displayed and you need to come up with a plan B. Gmail's meta-error page is simple, yet effective: Google can't always win.
This reminds me of a similar error message from Google Reader: "Oops! That wasn't supposed to happen".
{ The first screenshot is licensed as Creative Commons Attribution-Noncommercial by Viofiddler. The second one is licensed as Creative Commons Attribution by Ashley Dryden. }