Diskless Remote Boot in Linux (DRBL)

I had the same problem with stable DRBL on Ubuntu 9.10, so I followed the advice given here and upgraded to the latest unstable (1.9.5-8). It solved the hang described above, but unfortunately brought with it a new error.

It basically complains about already mounted filesystems right after staring drbl-client-boot and then reboots. I took a picture right before it rebooted, since it's supposed to say more than a thousand words.

Thanks in advance. I'm looking forward to your reply.