I am using Backtrack 5 R2 KDE on my Dell XPS side by side with Windows 7.
I have connected to internet via my University wifi using a proxy. I have access to internet via Firefox.
But when i use any "apt" command in terminal to install any package it shows an errors like Could not connect to 32.repository.backtrack-linux.org:80 (67.159.60.63), etc.


This is what it happens when i type sudo apt-get install gedit in terminal.

sudo apt-get install gedit
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
libdmraid1.0.0.rc16 python-pyicu libdebian-installer4 cryptsetup libecryptfs0 reiserfsprogs rdate bogl-bterm ecryptfs-utils libdebconfclient0 dmraid
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
gedit-common launchpad-integration liblaunchpad-integration1
The following NEW packages will be installed:
gedit gedit-common launchpad-integration liblaunchpad-integration1
0 upgraded, 4 newly installed, 0 to remove and 0 not upgraded.
Need to get 1,374kB of archives.
After this operation, 17.0MB of additional disk space will be used.
Do you want to continue [Y/n]? y
Err http://32.repository.backtrack-linux.org/ revolution/main liblaunchpad-integration1 0.1.35
Could not connect to 32.repository.backtrack-linux.org:80 (67.159.60.63). - connect (111: Connection refused) [IP: 67.159.60.63 80]
Err http://32.repository.backtrack-linux.org/ revolution/main gedit 2.30.3-0ubuntu0.1
Unable to connect to 32.repository.backtrack-linux.org:http: [IP: 67.159.60.63 80]
Err http://all.repository.backtrack-linux.org/ revolution/main gedit-common 2.30.3-0ubuntu0.1
Could not connect to all.repository.backtrack-linux.org:80 (67.159.60.63). - connect (111: Connection refused) [IP: 67.159.60.63 80]
Err http://all.repository.backtrack-linux.org/ revolution/main launchpad-integration 0.1.35
Unable to connect to all.repository.backtrack-linux.org:http: [IP: 67.159.60.63 80]
Failed to fetch http://32.repository.backtrack-linux....1.35_i386.deb Could not connect to 32.repository.backtrack-linux.org:80 (67.159.60.63). - connect (111: Connection refused) [IP: 67.159.60.63 80]
Failed to fetch http://all.repository.backtrack-linu...ntu0.1_all.deb Could not connect to all.repository.backtrack-linux.org:80 (67.159.60.63). - connect (111: Connection refused) [IP: 67.159.60.63 80]
Failed to fetch http://32.repository.backtrack-linux...tu0.1_i386.deb Unable to connect to 32.repository.backtrack-linux.org:http: [IP: 67.159.60.63 80]
Failed to fetch http://all.repository.backtrack-linu...0.1.35_all.deb Unable to connect to all.repository.backtrack-linux.org:http: [IP: 67.159.60.63 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?


So guys, Please help. I can do nothing, till this problem is solved.
Thank you in advance.