x86-32/x86-64 builder wanted

Hi all! We have two x86 builders for x86-32 (aka i386/ix86) and x86-64 (aka x86_64) right now. One of them (build64.livna.org) seems to mangle packages now and then, hence I disabled it a few days ago. The other is a VM on a big server that is a well known mirror in Germany -- hence its admin would like to temporary shut that builder down during times of heavy mirror load (that for example is expected for the 48 to 72 hours following Tuesday 1500 UTC). I'll enable build64.livna.org on Tuesday again -- hopefully it'll work fine for those two or three days. Hopefully we can reinstall that builder sooner or later -- maybe the problems will vanish them. But nevertheless it seems we really could need a third x86 builder. Does anyone have a x86_64 machine or a VM with CentOS5/RHEL5 to offer that is 24/7 on the net? It needs 10 to 15 GByte free hard disk space and a always up2date mirror with all Fedora releases and CentOS5 -- either in the VM (then way more hard disk space is needed) or on a separate machine in the local network. I can take care of setting the builder and mock up remotely once a RHEL/CentOS were installed. Ohh, forgot: The machine and the one that offers it of course needs to be trusted, as we don't want to have modified builders that return packages with Trojan Horses ;-) CU knurd