In the past few minutes a bug has been effecting a majority of Google's web apps leaving them crashing and in some cases down completely. Gmail, Chrome, Google+ and the Play Store are all included in the crash-log.
The error seems to be caused by the Google Chrome browser, specifically the Chrome Sync thread, which is appearing on most (if not all) of the latest error messages, including the ones that have affected myself.
I'll update the story when more information is available.
[UPDATE]: All of the services that had previously crashed seem to be running at 100% again.