[PLUTO-help] Knoppix 3.3 aiuto non capsico che tipo di errori siano?

[Fabio Testaferrata]

Salve a tutti dopo aver installato la Knoppix 3.3 ho avuto bisogno di alcuni programmi
che mi erano familiari con la mia slack 9.1; quindi mi sono rivolto al tool apt-get ma dopo aver lanciato apt-get update ho ottenuto questo:

gzip: stdin: invalid compressed data--crc error

gzip: stdin: invalid compressed data--length error
Err http://ftp2.de.debian.org unstable/main Packages
  Sub-process gzip returned an error code (1)
Fetched 3010kB in 10m55s (4596B/s)
Failed to fetch http://ftp2.de.debian.org/debian/dists/unstable/main/binary-i386/Packages.gz  Sub-process gzip returned an error code (1)
Reading Package Lists... Done
W: Couldn't stat source package list http://ftp2.de.debian.org unstable/main Packages (/var/lib/apt/lists/ftp2.de.debian.org_debian_dists_unstable_main_binary-i386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list http://ftp2.de.debian.org unstable/main Packages (/var/lib/apt/lists/ftp2.de.debian.org_debian_dists_unstable_main_binary-i386_Packages) - stat (2 No such file or directory)
W: Duplicate sources.list entry http://www.planet-moll.de woody/main Packages (/var/lib/apt/lists/www.planet-moll.de_debian_dists_woody_main_binary-i386_Packages)
W: You may want to run apt-get update to correct these problems
E: Some index files failed to download, they have been ignored, or old ones used instead.

Altre doamnde visto che ci sono:

1. E' buona cosa upgradare la Knoppix oppure è meglio tenersela così?
2. Quali fonti usare, cioè da quale distro woody,sarge,sid posso/devo prendere i files per upgradare?

Grazie.