Spacewalk vs. yum update

--> Finished Dependency Resolution
Error: Package: spacewalk-search-1.9.5-1.fc18.noarch (@spacewalk)
           Requires: quartz < 2.0
           Removing: quartz-1.8.4-4.fc18.noarch (@spacewalk)
               quartz = 1.8.4-4.fc18
           Updated By: quartz-2.1.2-4.fc18.noarch (fedora)
               quartz = 2.1.2-4.fc18
           Available: quartz-1.5.2-4.jpp5.noarch (jpackage-generic)
               quartz = 1.5.2-4.jpp5
Error: Package: spacewalk-java-1.9.84-1.fc18.noarch (@spacewalk)
           Requires: hibernate3 = 3.2.4
           Removing: hibernate3-3.2.4-1.SP1_CP01.9.jpp5.noarch (@jpackage-generic)
               hibernate3 = 3.2.4-1.SP1_CP01.9.jpp5
           Updated By: hibernate3-3.6.10-7.fc18.noarch (updates)
               hibernate3 = 3.6.10-7.fc18
           Available: hibernate3-3.6.10-6.fc18.noarch (fedora)
               hibernate3 = 3.6.10-6.fc18
Error: spacewalk-search conflicts with quartz-2.1.2-4.fc18.noarch
Error: spacewalk-taskomatic conflicts with quartz-2.1.2-4.fc18.noarch
Error: Package: spacewalk-taskomatic-1.9.84-1.fc18.noarch (@spacewalk)
           Requires: quartz < 2.0
           Removing: quartz-1.8.4-4.fc18.noarch (@spacewalk)
               quartz = 1.8.4-4.fc18
           Updated By: quartz-2.1.2-4.fc18.noarch (fedora)
               quartz = 2.1.2-4.fc18
           Available: quartz-1.5.2-4.jpp5.noarch (jpackage-generic)
               quartz = 1.5.2-4.jpp5
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest
[root@spacewalk ~]#

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[root@spacewalk ~]# yum update --skip-broken
** clip **
--> Finished Dependency Resolution

Packages skipped because of dependency problems:
    apache-commons-modeler-2.0.1-9.fc18.noarch from fedora
    hibernate-commons-annotations-4.0.1-2.fc18.noarch from fedora
    hibernate-jpa-2.0-api-1.0.1-7.fc18.noarch from fedora
    hibernate3-3.6.10-7.fc18.noarch from updates
    jboss-logging-3.1.0-4.fc18.noarch from fedora
    jboss-logmanager-1.2.2-3.fc18.noarch from fedora
    quartz-2.1.2-4.fc18.noarch from fedora

Dependencies Resolved