I noticed that when a package may have many different elements, such as xorg-x11, updating will fail because deps might be needed from the excluded list.
I had this happen because of adding xorg-x11 to my skipped packages recently. The package that caused the conflict was xorg-x11-deprecated-libs-6.7.9
What happened was a pop-up appeared indicating what will be attached to this message. Since this package was marked on the skipped list, it would not resolve.
As you can imagine, with the pop-up dialog box, it scrolled off of the top and bottom of the screen.
I did not search bugzilla regarding this sort of error. I don't think that too many excluded packages would contain so many rpms per program.
I removed xorg-x11 from the skipped programs list and installation continued normally.
If someone needed "watched" packages added to their skipped lists, this might be some problem that is worth looking into.
attached pop-up with xorg-x11* added to skipped package list.
If this is by design, maybe some method for determining the group the program belong to when skipped programs selected might be a nice add-on feature.
Jim