dist-upgrade da iso dvd di sarge

[Roberto Zanasi <zar.ghost@libero.it>]

Ho scaricato le iso di sarge in dvd, le ho fatte leggere al sistema con
apt-cdrom, e quando provo a fare il dist-upgrade ottengo questi errori:

spirit:/home/roberto# apt-get --simulate dist-upgrade
Reading Package Lists... Error!
E: Dynamic MMap ran out of room
E: Error occured while processing tclreadline (NewVersion1)
E: Problem with MergeList
/var/lib/apt/lists/Debian%20GNU_Linux%203.0%20r0%20%5fWoody%5f%20-%20Official%20i386%20Binary-4%20(20020718)_dists_unstable_main_binary-i386_Packages
E: The package lists or status file could not be parsed or opened.

Cosa posso fare?

Grazie