debian:~# apt-get update
Get:1 http://ftp.hosteurope.de etch Release.gpg [378B]
Hit http://ftp.hosteurope.de etch Release              
Get:2 http://ftp.hosteurope.de etch/main Packages [4295kB]
Get:3 http://security.debian.org etch/updates Release.gpg [189B]
99% [2 Packages bzip2 0] [Waiting for headers]         
bzip2: Data integrity error when decompressing.
        Input file = (stdin), output file = (stdout)

It is possible that the compressed file(s) have become corrupted.
You can use the -tvv option to test integrity of such files.

You can use the `bzip2recover' program to attempt to recover
data from undamaged sections of corrupted files.

Err http://ftp.hosteurope.de etch/main Packages
  Sub-process bzip2 returned an error code (2)
Hit http://security.debian.org etch/updates Release
Get:4 http://ftp.hosteurope.de etch/main Sources [1214kB]
Ign http://security.debian.org etch/updates/main Packages/DiffIndex
99% [4 Sources bzip2 520192]                 
bzip2: Data integrity error when decompressing.
        Input file = (stdin), output file = (stdout)

It is possible that the compressed file(s) have become corrupted.
You can use the -tvv option to test integrity of such files.

You can use the `bzip2recover' program to attempt to recover
data from undamaged sections of corrupted files.

Err http://ftp.hosteurope.de etch/main Sources
  Sub-process bzip2 returned an error code (2)
Ign http://security.debian.org etch/updates/main Sources/DiffIndex
Hit http://security.debian.org etch/updates/main Packages
Hit http://security.debian.org etch/updates/main Sources
Fetched 4B in 1s (3B/s)
Failed to fetch http://ftp.hosteurope.de/pub/linux/debian/dists/etch/main/binary-i386/Packages.bz2  Sub-process bzip2 returned an error code (2)
Failed to fetch http://ftp.hosteurope.de/pub/linux/debian/dists/etch/main/source/Sources.bz2  Sub-process bzip2 returned an error code (2)
Reading package lists... Done
W: Couldn't stat source package list http://ftp.hosteurope.de etch/main Packages (/var/lib/apt/lists/ftp.hosteurope.de_pub_linux_debian_dists_etch_main_binary-i386_Packages) - stat (2 No such file or directory)
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.
debian:~# apt-get update
Get:1 http://ftp.hosteurope.de etch Release.gpg [378B]
Hit http://ftp.hosteurope.de etch Release                                         
Get:2 http://security.debian.org etch/updates Release.gpg [189B]
Get:3 http://ftp.hosteurope.de etch/main Packages [4295kB]
99% [3 Packages bzip2 0] [Waiting for headers] [Waiting for headers]
bzip2: Data integrity error when decompressing.
        Input file = (stdin), output file = (stdout)

It is possible that the compressed file(s) have become corrupted.
You can use the -tvv option to test integrity of such files.

You can use the `bzip2recover' program to attempt to recover
data from undamaged sections of corrupted files.

Err http://ftp.hosteurope.de etch/main Packages                     
  Sub-process bzip2 returned an error code (2)
Get:4 http://ftp.hosteurope.de etch/main Sources [1214kB]           
Hit http://security.debian.org etch/updates Release      
99% [4 Sources bzip2 0]                      
bzip2: Data integrity error when decompressing.
        Input file = (stdin), output file = (stdout)

It is possible that the compressed file(s) have become corrupted.
You can use the -tvv option to test integrity of such files.

You can use the `bzip2recover' program to attempt to recover
data from undamaged sections of corrupted files.

Err http://ftp.hosteurope.de etch/main Sources
  Sub-process bzip2 returned an error code (2)
Ign http://security.debian.org etch/updates/main Packages/DiffIndex
Ign http://security.debian.org etch/updates/main Sources/DiffIndex
Hit http://security.debian.org etch/updates/main Packages
Hit http://security.debian.org etch/updates/main Sources
Fetched 4B in 1s (4B/s)
Failed to fetch http://ftp.hosteurope.de/pub/linux/debian/dists/etch/main/binary-i386/Packages.bz2  Sub-process bzip2 returned an error code (2)
Failed to fetch http://ftp.hosteurope.de/pub/linux/debian/dists/etch/main/source/Sources.bz2  Sub-process bzip2 returned an error code (2)
Reading package lists... Done
W: Couldn't stat source package list http://ftp.hosteurope.de etch/main Packages (/var/lib/apt/lists/ftp.hosteurope.de_pub_linux_debian_dists_etch_main_binary-i386_Packages) - stat (2 No such file or directory)
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.