UPDATE 9/24/13 8:40am: According to the Google website as of 9/23 9:00pm: "The problem with Gmail should be resolved. We apologize for the inconvenience and thank you for your patience and continued support. Please rest assured that system reliability is a top priority at Google, and we are making continuous improvements to make our systems better."
Original message 9/23/13 11:26am: Google is reporting that they're having some issues with Gmail. We don't have a ton of details at this time, however the progress can be followed online at http://www.google.com/appsstatus#hl=en&v=issue&ts=1379995199000&sid=1&iid=043f082bc7cd18e15458318035d9bc7a and of course you can call the LIS Technology Help Desk at ext.1000 for an up-to-date status.