Check out SourceForge's compile farm, they have two AMD64's running Fedora Core 3. I am trying a build now. You can also get access to some x86, PowerPCs, Alpha, etc. running OSX Server, FreeBSD, OpenBSD and other GNU/Linux flavors.
http://sourceforge.net/docman/display_doc.php? docid=762&group_id=1#cf_overview
I am starting in on an automated build system that'll email us when things don't compile...
.hc
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¡El pueblo unido jamás será vencido!