RIS-Linux 0.4 on Ubuntu Jaunty x64. I followed this PDF guide here: http://oss.netfarm.it/guides/ PXE / DHCP / TFTP works for other stuff such as GPartedLive, Memcheck, Ubuntu install. This is my first attempt at doing any PXE stuff with Windows, and I would really like to keep the RIS side on Linux if I can. I am guessing that the crazy file request is not the actual issue - perhaps something goes wrong before that, or something is not received correctly, and the PXE client side doesn't handle it very well and falls through or something and tries to get this garbage file. Always the same filename, exactly the same filename as the original poster - before we even get out of the initial TFTP requests and without any attempt to speak to the Python RIS server. Happens with real machines, happens with VM's too. Thanks, and I hope you can help.