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[iMac <854232@xxxxxxxxxxxxxxxxxx>]

If you think your authentication failure may be due to CAPTCHA, try
using the unlock URL to tell Google you are human.

https://www.google.com/accounts/UnlockCaptcha

I have not had a re-occurrence yet, but online docs suggest it will
work.

The only way to confirm auth failures are indeed CAPTCHA (and not some
other issue) is to disable the calendar (to stop the password prompts)
and then navigate to the Properties and Retrieve the Calendars.   It
seems that this invokes the libgdata interface that will report back the
CAPTCHA failure.

According to the upstream developers the CalDAV interface being used
does not properly support the CAPTCHA exception, so this issue will
remain until things cutover entirely to the new auth mechs in libgdata
or Google updates how the CalDAV interface works.

Similar issues happen to iPhone users who integrate Calendars via CalDAV: 
http://www.google.com/support/forum/p/Calendar/thread?tid=78dc7e4076e4fe26&hl=en 

Another workaround if the unlockURL does not work may be to hit the
CalDAV interface in your browser and see if it gets unlocked there (and
capture any undocumented CalDAV failure exception).

Server: https://www.google.com/calendar/dav/you@xxxxxxxxx/user/

Note: if you are trying to sync a secondary calendar, use this URL

Server: https://www.google.com/calendar/dav/[string of numbers and
letters]@group.calendar.google.com/user/

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to evolution-data-server in Ubuntu.
https://bugs.launchpad.net/bugs/854232

Title:
  Google authentication failing due to CAPTCHA

Status in Evolution Data Server:
  New
Status in “evolution-data-server” package in Ubuntu:
  New

Bug description:
  After the 3.1.91 to 3.1.92 update to evolution-data-server I have
  endless prompts for calendar authentication.  It seems that there was
  some breakage, perhaps with the keyring integration during this
  update.

  Inside evolution there was also an error displayed: 
  Error Loading Calendar

  Cannot open calendar: Unexpected HTTP status code 7 returned
  (Connection terminated unexpectedly)

  gdb output is attached

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: evolution-data-server 3.1.92-0ubuntu1
  ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
  Uname: Linux 3.0.0-11-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 1.23-0ubuntu1
  Architecture: amd64
  Date: Mon Sep 19 16:53:45 2011
  ProcEnviron:
   LANGUAGE=en
   PATH=(custom, no user)
   LANG=en_US.utf8
   SHELL=/bin/bash
  SourcePackage: evolution-data-server
  UpgradeStatus: Upgraded to oneiric on 2011-09-09 (10 days ago)

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