yum critical: <XYZ> was supposed to be installed but is not

Hello list,

I have tracked down a critical yum error message:


>kernel-source-2.6.27.25-0.1.1.x86_64
>was supposed to be installed but is not!

If this package is part of other rpm packages
which gets updated, I get this critical error
message for every rpm packet.
This error somtimes leads to the:

>db4 error(-30987) from db

which I have already posted:

http://lists.baseurl.org/pipermail/yum/2009-June/022809.html

The source in yum, which writes this error message is:

__init__.py around line 1048:

>for txmbr in self.tsInfo:
>  if txmbr.output_state in TS_INSTALL_STATES:
>    #print "checking:",po=txmbr.po
>    if not self.rpmdb.contains(po=txmbr.po):
>    # maybe a file log here, too
>    # but raising an exception is not going to do any good
>    self.logger.critical(_('%s was supposed to be installed' \
>                           ' but is not!' % txmbr.po))
>    continue

Is there a way to find out more?
Eg: Whats so evil with this "kernel-source" rpm?

regards,

Martin