According to a post by Paul McNamara of Network World, Google apologizes for a Gmail bug that shook 150,000 users. McNamara quotes Google's Gmail blog.
"I know what some of you are thinking: how could this happen if we have multiple copies of your data, in multiple data centers? Well, in some rare instances software bugs can affect several copies of the data. That's what happened here. Some copies of mail were deleted, and we've been hard at work over the last 30 hours getting it back for the people affected by this issue."
It is not known if any users of the CSU campus Gmail systems were affected.