Hi, I have been having the same issue with all the netboot images newer than woody, including the current one. My hardware is very similar, but a slower 400MHz CPU.
btw. Stop-A seems to be equivalent to L1-A. Regards Rich This e-mail is confidential and may be privileged. It may be read, copied and used only by the intended recipient. If you have received it in error, please contact the sender immediately by return e-mail or by telephoning +44 (0)20 7934 9000. Please then delete the e-mail and do not disclose its contents to any person. We believe, but do not warrant that this e-mail and any attachments, are virus free. You should take full responsibility for virus checking. SBG Companies reserve the right to monitor all email communications through their internal and external networks.
