12.04 - Update Manager downloads 32-bit and 64-bit packages

[FirstLast19]

I'm running Lubuntu 12.04 32-bit on Intel Core 2 Duo CPU, 2048MB RAM. Since I've updated I notice that the Update Manager is downloading archive lists for 32-bit and 64-bit. Can anyone explain how can I stop the 64-bit list, please? Thank you!

[raja.genupula]

cat /etc/apt/sources.list

post the output of it .

[FirstLast19]

cat /etc/apt/sources.list

post the output of it .
Thank you for your reply.
sudo cat /etc/apt/sources.list
# deb cdrom:[Lubuntu 12.04 _Precise Pangolin_ - Release i386 (20120423)]/ precise main multiverse restricted universe

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://mirrors.serverhost.ro/ubuntu/archive/ precise main restricted universe
deb-src http://mirrors.serverhost.ro/ubuntu/archive/ precise restricted main multiverse universe #Added by software-properties

## Major bug fix updates produced after the final release of the
## distribution.

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://mirrors.serverhost.ro/ubuntu/archive/ precise multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.

deb http://mirrors.serverhost.ro/ubuntu/archive/ precise-security main restricted universe
deb-src http://mirrors.serverhost.ro/ubuntu/archive/ precise-security restricted main multiverse universe #Added by software-properties
deb http://mirrors.serverhost.ro/ubuntu/archive/ precise-security multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu precise partner
deb-src http://archive.canonical.com/ubuntu precise partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu precise main
deb http://mirrors.serverhost.ro/ubuntu/archive/ precise-updates restricted main multiverse universe
deb-src http://extras.ubuntu.com/ubuntu precise main

[raja.genupula]

you got PAE kernels ?

[FirstLast19]

you got PAE kernels ?
x@x:~$ uname -a
Linux x 3.2.0-24-generic #38-Ubuntu SMP Tue May 1 16:21:07 UTC 2012 i686 i686 i386 GNU/Linux

[raja.genupula]

update manager > settings > other TAB and uncheck any PPA thats with AMD-64 .

[FirstLast19]

update manager > settings > other TAB and uncheck any PPA thats with AMD-64 .
Sorry, I was checking early, it is nothing with AMD-64.