"Size mismatch" during safe-upgrade

[Meike Stone <meike.stone@googlemail.com>]

Hello,

I use Debian 6 and tried to upgrade my system. I made as root a
~# aptitude update
~# aptitude safe-upgrade
an got following error:
..
..

Setting up linux-libc-dev (2.6.32-39squeeze1) ...
E: Failed to fetch
http://security.debian.org/pool/updates/main/l/linux-2.6/linux-image-2.6.32-5-amd64_2.6.32-39squeeze1_amd64.deb:
Size mismatch

Current status: 1 update [-44].

my sources.list:

deb http://ftp.tu-chemnitz.de/pub/linux/debian/debian/ squeeze main
contrib non-free
deb-src http://ftp.tu-chemnitz.de/pub/linux/debian/debian/ squeeze
main contrib non-free

deb http://security.debian.org/ squeeze/updates main
deb-src http://security.debian.org/ squeeze/updates main


What can I do to solve the problem?


Thanks Meike!