Software Centre Wont Open

If you run:

sudo apt-get update && sudo apt-get -y upgrade

Is it smooth?

Ign http://archive.canonical.com natty InRelease
Ign http://archive.ubuntu.com oneiric InRelease
Ign http://archive.canonical.com oneiric InRelease
Ign http://extras.ubuntu.com oneiric InRelease
Ign http://ppa.launchpad.net oneiric InRelease
Ign http://ppa.launchpad.net oneiric InRelease
Ign http://ppa.launchpad.net oneiric InRelease
Ign http://archive.ubuntu.com oneiric-updates InRelease
Ign http://archive.ubuntu.com oneiric-security InRelease
Ign http://ppa.launchpad.net oneiric InRelease
Ign http://ppa.launchpad.net oneiric InRelease
Get:1 http://extras.ubuntu.com oneiric Release.gpg [72 B]
Hit http://archive.ubuntu.com oneiric Release.gpg
Get:2 http://archive.ubuntu.com oneiric-updates Release.gpg [198 B]
Hit http://archive.canonical.com natty Release.gpg
Ign http://ppa.launchpad.net oneiric Release.gpg
Hit http://ppa.launchpad.net oneiric Release.gpg
Hit http://extras.ubuntu.com oneiric Release
Get:3 http://archive.ubuntu.com oneiric-security Release.gpg [198 B]
Hit http://archive.canonical.com oneiric Release.gpg
Hit http://ppa.launchpad.net oneiric Release.gpg
Hit http://ppa.launchpad.net oneiric Release.gpg
Hit http://archive.ubuntu.com oneiric Release
Hit http://archive.canonical.com natty Release
Hit http://ppa.launchpad.net oneiric Release.gpg
Ign http://ppa.launchpad.net oneiric Release
Get:4 http://archive.ubuntu.com oneiric-updates Release [40.8 kB]
Hit http://archive.canonical.com oneiric Release
Hit http://extras.ubuntu.com oneiric/main Sources
Hit http://ppa.launchpad.net oneiric Release
Hit http://ppa.launchpad.net oneiric Release
Hit http://archive.canonical.com natty/partner Sources
Hit http://extras.ubuntu.com oneiric/main i386 Packages
Ign http://extras.ubuntu.com oneiric/main TranslationIndex
Hit http://ppa.launchpad.net oneiric Release
Hit http://ppa.launchpad.net oneiric Release
Hit http://archive.canonical.com natty/partner i386 Packages
Ign http://archive.canonical.com natty/partner TranslationIndex
Hit http://archive.canonical.com oneiric/partner i386 Packages
Ign http://ppa.launchpad.net oneiric/main TranslationIndex
Hit http://ppa.launchpad.net oneiric/main Sources
Hit http://ppa.launchpad.net oneiric/main i386 Packages
Ign http://ppa.launchpad.net oneiric/main TranslationIndex
Hit http://ppa.launchpad.net oneiric/main Sources
Hit http://ppa.launchpad.net oneiric/main i386 Packages
Get:5 http://archive.ubuntu.com oneiric-security Release [40.8 kB]
Ign http://archive.canonical.com oneiric/partner TranslationIndex
Ign http://ppa.launchpad.net oneiric/main TranslationIndex
Hit http://ppa.launchpad.net oneiric/main Sources
Hit http://ppa.launchpad.net oneiric/main i386 Packages
Ign http://ppa.launchpad.net oneiric/main TranslationIndex
Hit http://ppa.launchpad.net oneiric/main Sources
Hit http://ppa.launchpad.net oneiric/main i386 Packages
Hit http://archive.ubuntu.com oneiric/restricted Sources
Hit http://archive.ubuntu.com oneiric/main Sources
Hit http://archive.ubuntu.com oneiric/multiverse Sources
Hit http://archive.ubuntu.com oneiric/universe Sources
Hit http://archive.ubuntu.com oneiric/main i386 Packages
Hit http://archive.ubuntu.com oneiric/restricted i386 Packages
Hit http://archive.ubuntu.com oneiric/universe i386 Packages
Hit http://archive.ubuntu.com oneiric/multiverse i386 Packages
Ign http://ppa.launchpad.net oneiric/main TranslationIndex
Hit http://archive.ubuntu.com oneiric/main TranslationIndex
Hit http://archive.ubuntu.com oneiric/multiverse TranslationIndex
Hit http://archive.ubuntu.com oneiric/restricted TranslationIndex
Hit http://archive.ubuntu.com oneiric/universe TranslationIndex
Get:6 http://archive.ubuntu.com oneiric-updates/restricted Sources [1,337 B]
Get:7 http://archive.ubuntu.com oneiric-updates/main Sources [113 kB]
Ign http://archive.getdeb.net oneiric-getdeb InRelease
Ign http://extras.ubuntu.com oneiric/main Translation-en_US
Get:8 http://archive.ubuntu.com oneiric-updates/multiverse Sources [3,654 B]
Get:9 http://archive.ubuntu.com oneiric-updates/universe Sources [37.9 kB]
Ign http://extras.ubuntu.com oneiric/main Translation-en
Get:10 http://archive.ubuntu.com oneiric-updates/main i386 Packages [261 kB]
Err http://ppa.launchpad.net oneiric/main Sources
  404 Not Found
Err http://ppa.launchpad.net oneiric/main i386 Packages
  404 Not Found
Ign http://archive.canonical.com natty/partner Translation-en_US
Ign http://archive.canonical.com natty/partner Translation-en
Ign http://archive.canonical.com oneiric/partner Translation-en_US
Ign http://ppa.launchpad.net oneiric/main Translation-en_US
Ign http://ppa.launchpad.net oneiric/main Translation-en
Ign http://ppa.launchpad.net oneiric/main Translation-en_US
Ign http://ppa.launchpad.net oneiric/main Translation-en
Ign http://archive.canonical.com oneiric/partner Translation-en
Ign http://ppa.launchpad.net oneiric/main Translation-en_US
Ign http://ppa.launchpad.net oneiric/main Translation-en
Ign http://ppa.launchpad.net oneiric/main Translation-en_US
Ign http://ppa.launchpad.net oneiric/main Translation-en
Ign http://ppa.launchpad.net oneiric/main Translation-en_US
Ign http://ppa.launchpad.net oneiric/main Translation-en
Get:11 http://archive.ubuntu.com oneiric-updates/restricted i386 Packages [2,968 B]
Get:12 http://archive.ubuntu.com oneiric-updates/universe i386 Packages [86.8 kB]
Get:13 http://archive.ubuntu.com oneiric-updates/multiverse i386 Packages [6,332 B]
Get:14 http://archive.ubuntu.com oneiric-updates/main TranslationIndex [74 B]
Get:15 http://archive.ubuntu.com oneiric-updates/multiverse TranslationIndex [72 B]
Get:16 http://archive.ubuntu.com oneiric-updates/restricted TranslationIndex [71 B]
Get:17 http://archive.ubuntu.com oneiric-updates/universe TranslationIndex [73 B]
Get:18 http://archive.ubuntu.com oneiric-security/restricted Sources [14 B]
Get:19 http://archive.ubuntu.com oneiric-security/main Sources [24.0 kB]
Get:20 http://archive.ubuntu.com oneiric-security/multiverse Sources [1,629 B]
Get:21 http://archive.ubuntu.com oneiric-security/universe Sources [8,593 B]
Get:22 http://archive.ubuntu.com oneiric-security/main i386 Packages [70.4 kB]
Get:23 http://archive.ubuntu.com oneiric-security/restricted i386 Packages [14 B]
Get:24 http://archive.ubuntu.com oneiric-security/universe i386 Packages [24.1 kB]
Get:25 http://archive.ubuntu.com oneiric-security/multiverse i386 Packages [3,345 B]
Get:26 http://archive.ubuntu.com oneiric-security/main TranslationIndex [73 B]
Get:27 http://archive.ubuntu.com oneiric-security/multiverse TranslationIndex [72 B]
Get:28 http://archive.ubuntu.com oneiric-security/restricted TranslationIndex [70 B]
Get:29 http://archive.ubuntu.com oneiric-security/universe TranslationIndex [73 B]
Hit http://archive.ubuntu.com oneiric/main Translation-en
Hit http://archive.ubuntu.com oneiric/multiverse Translation-en
Hit http://archive.ubuntu.com oneiric/restricted Translation-en
Hit http://archive.ubuntu.com oneiric/universe Translation-en
Hit http://archive.getdeb.net oneiric-getdeb Release.gpg
Get:30 http://archive.ubuntu.com oneiric-updates/main Translation-en [123 kB]
Hit http://archive.ubuntu.com oneiric-updates/multiverse Translation-en
Hit http://archive.ubuntu.com oneiric-updates/restricted Translation-en
Get:31 http://archive.ubuntu.com oneiric-updates/universe Translation-en [52.8 kB]
Get:32 http://archive.ubuntu.com oneiric-security/main Translation-en [36.6 kB]
Hit http://archive.ubuntu.com oneiric-security/multiverse Translation-en
Hit http://archive.ubuntu.com oneiric-security/restricted Translation-en
Get:33 http://archive.ubuntu.com oneiric-security/universe Translation-en [17.0 kB]
Hit http://archive.getdeb.net oneiric-getdeb Release
Hit http://archive.getdeb.net oneiric-getdeb/apps Sources
Hit http://archive.getdeb.net oneiric-getdeb/apps i386 Packages
Ign http://archive.getdeb.net oneiric-getdeb/apps TranslationIndex
Ign http://archive.getdeb.net oneiric-getdeb/apps Translation-en_US
Ign http://archive.getdeb.net oneiric-getdeb/apps Translation-en
Fetched 956 kB in 12s (75.9 kB/s)
W: Failed to fetch http://ppa.launchpad.net/bisigi/ppa/ubuntu/dists/oneiric/main/source/Sources 404 Not Found

W: Failed to fetch http://ppa.launchpad.net/bisigi/ppa/ubuntu/dists/oneiric/main/binary-i386/Packages 404 Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.

is the outcome

The Bisigi PPA only suports up to Natty:
http://ppa.launchpad.net/bisigi/ppa/ubuntu/dists/

I suggest you remove it.

Does the system have web access?
Have you configured a firewall at all?
Do you use a proxy?

i have removed
http://ppa.launchpad.net/bisigi/ppa/ubuntu/dists/

And ran
sudo apt-get update && sudo apt-get -y upgrade
again and it was fine
yes i have web access have not played round witth firewall at all and no i dont use a proxy

it is still freezing after that

ok, if you run:

gksudo software-center

Is it ok?

it works fine when i run it from terminal using
gksudo software-center

Is there anything output to the terminal?

nope
just
gksudo software-center
thats it

Try:

sudo apt-get --reinstall install software-center

after it installs, does the app run ok?

nope it is still freezing ?? :(

Try this:
http://www.omgubuntu.co.uk/2012/01/how-to-easily-install-the-slickest-software-center-on-linux/