Today when using F17 Alpha, I ran qemu and got an error which was something like: qemu-kvm: undefined symbol usbredirhost_foo (I don't recall the precise symbol). This was just because that version of qemu was compiled against a later version of libusbredirhost.so (but one with the same soname), and updating libusbredirhost.so fixed the problem. The 'qemu' package has a bug, of sorts: the maintainer should have added a specific Requires line: Requires: usbredir >= <some version> However, instead of pushing this problem on packagers, maybe RPM should resolve this by encoding the (admittedly long) list of symbols used by a binary? Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel