Hundreds of duplicates at Jazz.net RSS Feed

Hi. I use ThunderBird as RSS client and since the change to the new site I receives hundreds of duplicates for Library RSS Feed.

I asked at ThunderBird forums and they told me this is an issu of the site.

Investigating a little bit the "difference" between two duplicates I found out it is in the Message-Id header. Here is an example of the same RSS article being received duplicated:

Message-Id: </library/LearnItem.jsp?href=content/articles/clm/2012/websphere-ldap-performance-optimization/index.html;1143@localhost.localdomain>

and

Message-Id: <https://jazz.net/library/LearnItem.jsp?href=content/articles/clm/2012/websphere-ldap-performance-optimization/index.html;1143@localhost.localdomain>

Is there any way you can avoid these changes in already posted articles so we don't receive more than once?

Thanks,

    Chemi.