I did write a floppy using the cdrom.img found in /install/floppy and tried the installation again. The installer asks for the floppy, I insert the floppy, it check it and after some time and then it says that there isn't any cdrom and prompts again for a floppy. So, it seems that sid_d-i 20040616 isn't installable with the 2.6 kernel. Bye, Giuseppe