Twice today for about 20 minutes I've been unable to log into my Gmail account. Most of the time I saw this error:
...but a few times I saw this more worrisome error:
No service can be perfect, but Gmail is so good that many people I know rely on it for all their e-mail, personal and professional. Since it doesn't store any of your mail on your own computer, when it's down, you are dead in the water. "Please try again in a few hours" does not inspire confidence.