[OT] Broken newsgroup threads in Thunderbird 3?

[jpf]

On 16.12.2009 00:30, retard wrote:
> 
> Probably the previous versions of Thunderbird somehow inferred the 
> correct thread even when the post was sent with a broken client. Some 
> posts seem to erroneously become top level no matter what client I use. 
> This whole mess started when the web interface was introduced.

I just had a quick look at the headers of the broken messages and they
were indeed all send with the webnews client. It seems like the webnews
client doesn't set the 'References' header for those messages. Strangely
most messages posted with webnews have the references header set though,
I don't know why it sometimes doesn't work.

Header examples:
Webnews, bad threading

Path: digitalmars.com!not-for-mail
From: /removed/
Newsgroups: digitalmars.D
Subject: Re: transporting qualifier from parameter to the return value
Date: Wed, 16 Dec 2009 08:48:54 -0500
Organization: Digital Mars
Lines: 37
Message-ID: <hgaog6$89p$1 at digitalmars.com>
Mime-Version: 1.0
Content-Type: text/plain
X-Trace: digitalmars.com 1260971334 8505 65.204.18.200 (16 Dec 2009
13:48:54 GMT)
X-Complaints-To: usenet at digitalmars.com
NNTP-Posting-Date: Wed, 16 Dec 2009 13:48:54 +0000 (UTC)
User-Agent: Web-News v.1.6.3 (by Terence Yim)
Xref: digitalmars.com digitalmars.D:103651

Opera, working threading

Path: digitalmars.com!not-for-mail
From: /removed/
Newsgroups: digitalmars.D
Subject: Re: transporting qualifier from parameter to the return value
Date: Tue, 15 Dec 2009 22:41:19 -0500
Organization: Digital Mars
Lines: 47
Message-ID: <op.u40hu5yeeav7ka at localhost.localdomain>
*References: <hg9il4$ada$1 at digitalmars.com>*
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed; delsp=yes
Content-Transfer-Encoding: 8bit
X-Trace: digitalmars.com 1260934881 15220 76.119.224.220 (16 Dec 2009
03:41:21 GMT)
X-Complaints-To: usenet at digitalmars.com
NNTP-Posting-Date: Wed, 16 Dec 2009 03:41:21 +0000 (UTC)
User-Agent: Opera Mail/10.10 (Linux)
Xref: digitalmars.com digitalmars.D:103611