On at least 2 FC6 x86-64 boxes, I had issues with ext2libs where I had to download all files and manually install. When I finally updated my laptop, I had hundreds of MB of updates. One issue is that on x86_64, there are two copies so if you remove, you must do rpm -e --all-matches.... I have had CONTINUAL issues with using yum to keep my boxes updated. Every few weeks I get conflicts which have to be manually resolved, often by simply removing a package and reinstalling it to get the latest. On my FC6 x86_64 laptop, yum crashed twice and I had to remove the __db* files and rebuild the RPM DB to get it to work. This is a 4-5 year old problem with RPM (first seen with RH7 or RH8 and the newer Berkley DB). All my boxes use FC6 (i386 or x86_64), extras, and a few packages from http://freshrpms.net. It would be nice if they all played well together. We could start a flame war contrasting MS Update versus YUM?