I´m running this machine inside VMware Server and VMware package was installed once, but I´ve removed it. I also have removed some two i386 other packages that were installed, and also some (one or two) i686 packages.
As you can see, yum is asking to install i386 and i686 packages. It was expected to ask only for x86_64 , wasn´t it?
Not really. There are x86 packages in the x86_64 tree for compatiblity reasons. Since you didn't specify "which" arch you want to install, or exclude, it matches the first one it hits, which is the i386 version. This has been covered at quite some length in the mailing list archives, on the order of around 2-3 times a month. Mostly, you can exclude the x86 arches, or give the install a specific arch to look for. Search the archives for exact syntax.