Something went wrong with our Google App integration (right after I just tried to set it up).
Full text:
Something went wrong when trying to obtain user information from your Google Apps Domain and your JIRA instance.
com.google.gdata.util.AuthenticationException: Unknown authorization header <html> <head> <title>Unknown authorization header</title> </head> <body bgcolor="#FFFFFF" text="#000000">
Unknown authorization header
Error 401
</body> </html>