----- Original Message ---- > From: Kai Schaetzl <maillists at conactive.com> > To: centos at centos.org > Sent: Wed, 6 April, 2011 17:15:27 > Subject: Re: [CentOS] Centos 6 Update? > > Your mail is broken because it doesn't contain correct threading headers > (In-Reply-To). Because of that it just threads "everywhere" in this > thread. For instance, for me, your message was threaded to Russell Jones' > because it came in after his mail. Use a decent email program and the > problem is gone. > > Kai Thanks. Appears to be a problem with the new Yahoo webmail beta. Reverting it back to the previous version *appears* to solve the problem. At least it did in test (and hopefully it will now). Having looked at the RFC's, "in-reply-to" doesn't appear to be mandatory... strictly speaking... although it is described as "SHOULD" be used. Anyway, thanks again. I will feed it back to Yahoo.