[Evolution] HTTP 409 when modifying CardDAV Contact with Zimbra (was: Re: Help Debugging CardDAV Issue)

[Rich Renomeron <rrenomeron gmail com>]

On Tue, 2010-09-21 at 21:46 -0400, Rich Renomeron wrote:
> On Tue, 2010-09-21 at 21:32 -0400, John A. Sullivan III wrote:
> > What problem are you having?
>
> I can add contacts to Zimbra just fine, but when I attempt to edit an
> already-existing contact, I will get either:
>
>       * "Error modifying contact -- other error" in a dialog box, or,
>       * A warning about a duplicate contact, followed by the "Error
>         Modifying Contact" dialog if I continue.

So I've turned on the WebDAV debugging that Milan Crha suggested the
other day (thanks!), and discovered that Zimbra was responding to the
update with a HTTP 409 (Conflict) error.  I've tried this both with and
without the "Avoid IfMatch" option set on the address book.  Is there
anything that might be causing this, or is it time to hit Bugzilla?

Thanks,
Rich