wido046 did you configure the mirrors for updating? Thes are for 64x version
Paste this text below into your /etc/apt/sources.list and then re run your updates again..
# deb cdrom:[Debian GNU/Linux 7.0 _Kali_ - Official Snapshot amd64 LIVE/INSTALL Binary 20130307-13:03]/ kali contrib main non-free
#deb cdrom:[Debian GNU/Linux 7.0 _Kali_ - Official Snapshot amd64 LIVE/INSTALL Binary 20130307-13:03]/ kali contrib main non-free
deb
http://http.kali.org/kali kali main non-free contrib
deb-src
http://http.kali.org/kali kali main non-free contrib
## Security updates
deb
http://security.kali.org/kali-security kali/updates main contrib non-free