All stores experienced approximately 25 minutes of downtime on Apr 29th, 2011, between 8:55 AM and 9:20 AM Pacific.
This was unplanned downtime. Typically it is unnoticed by visitors when an occasional store node is down because there are multiple store nodes available to pick up traffic. This case was unusual in that it affected all store nodes simultaneously. We're still investigating the issue and possible future prevention steps.
During this time customers would have seen a message displayed in their browser containing the following information:
"Store Temporarily Unavailable - We are experiencing technical difficulty and are working to resolve the issue as soon as possible. Please try visiting again soon."