Are you using Gmail and are being redirected to basic HTML? Google wants to know if you've been afflicted by this new bug -- they acknowledge the problem -- and they want you to provide some insight for them to diagnose the issue via Google Groups.
In related news, Gmail users are also finding that their emails are disappearing, according to NetworkWorld. Thankfully, that's not happening to me or any other forum members for that matter.
Forum discussion continues at Google Groups and DigitalPoint Forums.