[syslinux] Pxelinux freezes/reboots where PXE boot option boots normally.

[G. Georgiev]

	Hello,

	I got in a situation where pxelinux 3.7 (or 3.6) reboots constantly after 
loading the configuration file and displaying the 'display' option file, but 
never showing 'boot:' prompt.

	config file is following:
# PXE SYSLINUX config file - look at
# http://syslinux.zytor.com/faq.php for syntax 
#
# ---------- This is gate configure file -------
timeout 20
prompt 1
display motd
default gate.zi
IPAPPEND 1

	I tried this with two old pentiums/133 with 3c509b or rtl8139 ethernet cards 
with etherboot 5.3.7 (5.3.12 does not work), same result.

	What is really vexing is that two newer computers - P4 and Athlon ?? that 
have 'PXE boot' option boot just perfectly using same configuration.

	I compiled the Syslinux package on P4 linux computer, however this should not 
matter at all. DHCP / Tftp set-up is fine, given that computers with 'PXE 
boot ' bios are able to load the kernel.

	Some ideas why this may happen?
	Thanks, George.