Description of problem:
Not really yum per se, but a packaging problem: cannot update the system
because of packaging dependencies error for Tcl/Tk packages, which blocks
the entire update.

The workaround is to exclude Tcl/Tk from the update process:

   yum update -x tcl* -x tk*


The system is a brand spanking new Fedora 9 install, with everything; just did
a couple of update cycles after loading from F9 DVD.



Version-Release number of selected component (if applicable):
This happens as of Sat Jun 28, 08:30 EST (relevant because the packaging
dependencies are received from the Fedora update sites as of that date)

How reproducible: very reproducible

Steps to Reproduce:
1. yum update
2. observe Error: Missing dependency messages
  
Actual results:
yum update
Loaded plugins: refresh-packagekit
Setting up Update Process
Resolving Dependencies
--> Running transaction check
---> Package tcl-devel.i386 1:8.5.2-1.fc9 set to be updated
--> Processing Dependency: tcl = 1:8.5.1 for package: tk
--> Processing Dependency: tcl-devel = 1:8.5.1 for package: tk-devel
---> Package tcl.i386 1:8.5.2-1.fc9 set to be updated
--> Finished Dependency Resolution
1:tk-devel-8.5.1-4.fc9.i386 from installed has depsolving problems
  --> Missing Dependency: tcl-devel = 1:8.5.1 is needed by package
1:tk-devel-8.5.1-4.fc9.i386 (installed)
1:tk-8.5.1-4.fc9.i386 from installed has depsolving problems
  --> Missing Dependency: tcl = 1:8.5.1 is needed by package
1:tk-8.5.1-4.fc9.i386 (installed)
Error: Missing Dependency: tcl-devel = 1:8.5.1 is needed by package
1:tk-devel-8.5.1-4.fc9.i386 (installed)
Error: Missing Dependency: tcl = 1:8.5.1 is needed by package
1:tk-8.5.1-4.fc9.i386 (installed)


Expected results:
Of course I expected a successful yum update