According to several reports on the DigitalPoint Forums, Gmail experienced an outage in the middle of the day. Members were seeing the following message:
This seems to be taking longer than usual.
If you are using a slow Internet connection, you can wait a bit longer for this page to finish loading, or just use basic HTML view for now.
If you are using your normal Internet connection and you usually get past this loading step without any problems, please refresh this page in your browser. If you continue to have trouble loading your account, please visit the help center for troubleshooting information.
Not everyone was experiencing the downtime, but it seemed to have been sporadic throughout the day.
An article in PC World states that this is the third time that Gmail had experienced an outage this month. According to a company spokesperson, Google is aware of the issue and is taking it very seriously.
A Google Groups thread shows official word from Google acknowledging the problem. Their most recent message was posted last night and says:
The account errors some of you have been experiencing are now resolved for the vast majority of users. You may experience some delays in mail delivery, although we expect these to be resolved shortly. A small group of accounts, however, may continue to show errors, and we'll be watching these errors closely to ensure they're fixed as soon as possible. We apologize for the inconvenience today and appreciate your patience.
Update from Barry: Just want to add that David Ogletree also spotted this.