Bug 261201

Um, lyx.spec includes:
Obsoletes: %{name}-qt < %{version}-%{release}
Provides:  %{name}-qt = %{version}-%{release}
Obsoletes: %{name}-xforms < %{version}

So that *should* be taken care-of, unless you're trying:
yum update lyx lyx-qt lyx-xforms
which probably won't work.

$ yum update
*should* do the right thing.  If not, say so.

Something wierd is happening.  If I do the following:

1. yum clean metdata
2. yum clean dbcache
3. yum list udpates
4. yum update (but press "N" and cancel)
5. yum update lyx\*

Then I am able to reproduce the error %100 percent of the time.  Note that
command #4 actually would have worked properly, with lyx replacing lyx-xforms. 
I just happened to cancel that command.  However, if I run the following
sequence, removing command #4 above:

1a. yum clean metadata
2a. yum clean dbcache
3a. yum list udpates
4a. yum update lyx\*

Then I get the error again.  yum does not like my specifying just the lyx
packages, but is fine updating everything.  I am going to attach the output of
the above command sequences momentarily.

Created attachment 177921 [details]
output of command 1-5

Here is the output from commands 1-5 in comment #2.

Created attachment 177941 [details]
output of commands 1a-4a

Here is the output from commands 1a-4a in comment #2 above.

Wrong: yum update lyx\*
Right: yum update lyx
or
Right: yum update

Try again.

Yeah, "yum update lyx" works.  I guess the problem was that I was trying to
update a package that was supposed to go away.  Thinking about it, I can imagine
that condition generates undefined behavior.  The phrase of the moment is, "Duh."

(Sheepishly) Everything works here now.  I'll go ahead and close this bug out
and mark it NOTABUG.

Thank you very much for all of your help.  It is very appreciated.