I believe I've finally resolved the last of the issues with clamav packages on all effected operating systems and architectures. Specifically, there have been dependency resolution issues on all Red Hat, Fedora, and CentOS based systems due to some changes in the packages beginning with version 0.88.1. As of this evening all of these operating systems on both i386 and x86_64 architectures should be able to update clamav packages without error.

If you've run into dependency issues in the last week or so, you may want to run the following before updating again:

yum clean all

Sorry for any inconvenience the packaging bugs may have caused.