Many users are experiencing a Gmail outage and issues with other Google services including Drive, Docs, and Google Play. In addition to simply being down, some users are reporting that attempting to access various services crashes the Chrome browser — the issue appears to be related to Chrome Sync, as users are getting a "Chrome_SyncThread" error returned to them. Additionally, commenters at Hacker News point out that the crashes appear to stop after disabling Chrome Sync. The last notable outage happened back in April with Gmail and was resolved quickly. Today's problems seem more widespread, affecting multiple services.
In an email to The Verge, Google writes that "we are currently experiencing an issue with some Google services. For everyone who is affected, we apologize for any inconvenience you may be experiencing." The company will continue to provide updates about the service disruption on its Apps Status Dashboard.
Update: Google's App Status Dashboard now acknowledges the "service disruption" for Gmail and Google Drive, and the company writes that it is investigating reports of issues with each. Some users, including a few at The Verge, have reported that their service has been restored. We'll update you as we learn more.