Hi, As I couldnt find any appropriate bugzilla - so I'll post directly to you. There seems to be a problem with EPEL repo libguestfs-1.0.85-1.el5.5 rpm (x86_64) - for example it is very slow with VM filesystem copy as it does not make use of KVM acceleration (running plain qemu). Running libguestfs-test-tool reveals that libguestfs is looking for /dev/kqemu and ofcourse its not there in case of CentOS/RHEL (5.4). Im not yet entirely sure why it does not use KVM - but I guess it can be missing from build already. We are trying to rebuild src rpm on CentOS 5.4 but encountering still some (probably dependency) problems.