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Protected multilib versions: libstdc++-4.6.3-2.el6.x86_
64 != libstdc++-4.4.7-3.el6.i686
Error: Protected multilib versions: libgcc-4.6.3-2.el6.x86_64 != libgcc-4.4.7-3.el6.i686
---> Package libgomp.x86_64 0:4.6.3-2.el6 will be an update ---> Package libtool.x86_64 0:2.2.6-15.5.el6 will be updated ---> Package libtool.x86_64 0:2.4-9.el6 will be an update --> Finished Dependency Resolution Error: Multilib version problems found. This often means that the root cause is something else and multilib version checking is just pointing out that there is a problem. Eg.: 1. You have an upgrade for libstdc++ which is missing some dependency that another package requires. Yum is trying to solve this by installing an older version of libstdc++ of the different architecture. If you exclude the bad architecture yum will tell you what the root cause is (which package requires what). You can try redoing the upgrade with --exclude libstdc++.otherarch ... this should give you an error message showing the root cause of the problem. 2. You have multiple architectures of libstdc++ installed, but yum can only see an upgrade for one of those arcitectures. If you don't want/need both architectures anymore then you can remove the one with the missing update and everything will work. 3. You have duplicate versions of libstdc++ installed already. You can use "yum check" to get yum show these errors. ...you can also use --setopt=protected_multilib=false to remove this checking, however this is almost never the correct thing to do as something else is very likely to go wrong (often causing much more problems). Protected multilib versions: libstdc++-4.6.3-2.el6.x86_64 != libstdc++-4.4.7-3.el6.i686 Error: Protected multilib versions: libgcc-4.6.3-2.el6.x86_64 != libgcc-4.4.7-3.el6.i686 You could try using --skip-broken to work around the problem ** Found 2 pre-existing rpmdb problem(s), 'yum check' output follows: