Fedora X86/64bit :: Skype Doesn't Install Dependencies On 12 X86_64

I'm trying to get skype to work on my new system. It seems to install, but trying to run it I get an error message naming a missing dependency. Searching for this with yum whatprovides and installing the result worked in one case, but for the next one, yum install <package containing missing item> returns a few errors of the form:

package <name-version>.fc12.x86_64 (which is newer than <package-version>.fc12.i686) is already installed Is there any way around this? I'd like to get skype working, but am having no luck at the moment. I'd prefer not to remove the .x86_64 packages if I can avoid it in case that breaks something else.