Comment 16 for bug 273601

> should i log a separate bugreport about this ?

 I think that's already in Ubuntu's released Intrepid kernel, not just the proposed-updates kernel. See the changelog.Debian.gz

linux (2.6.27-7.13) intrepid; urgency=low
...
  * Fix barrier fail detection in XFS
...
 -- Tim Gardner <email address hidden> Sun, 19 Oct 2008 10:06:21 -0600

 Which was a day after Linux 2.6.27.2 was released: from ChangeLog-2.6.27.2:
commit 6bcd6d778419101dd96cbbdf03eeab8d779b1d66
Author: Greg Kroah-Hartman <email address hidden>
Date: Sat Oct 18 10:57:22 2008 -0700

    Linux 2.6.27.2
...
commit 769b0455c1ec257b9e5067129accab1a6052de4c
Author: Christoph Hellwig <email address hidden>
Date: Fri Oct 10 17:28:29 2008 +1100

    Fix barrier fail detection in XFS