I suspect you are the first victim of my ELF booting changes. In which case the way etherboot gets the memory size for linuxBIOS needs to change. The patch is at: ftp://download.lnxi.com/pub/src/etherboot/etherboot-5.0.5.eb1.diff
This causes etherboot to directly read a linuxBIOS table instead of expecting linuxBIOS to pass it all of the information it needs. The new way is insanely more robust. But it won't be until the next version of etherboot that this patch will be integrated. You definentily have a version of linuxBIOS that has stopped passing the memory size information. Eric
