bt3 beta 更新内容:
1.除了700M的光盘iso版本,这次还放出了946M的USB版本.
2.雙核問題也解決了，用了更新的linux内核：2.6.15.5
3.支持的無綫網卡更多，包插入補丁也更完善.
4.xorg的配置腳本增強了
5.漏洞程序和metasploit漏洞升級了
6.PXE網絡啓動方式增加（USB版才有）
7.PwnSauce的John The Ripper集群破解方式增加 (USB版才有)
8.ATI/Intel驅動和Nvidia驅動完善 （USB版才有)
官方下载:
BackTrack 3 Beta ISO version (Stripped Down – 700 mb)
http://www.offensive-security.com/bt3b141207.iso.torrent
md5sum : 04ed8742fc8facd1ecc8c9f6f567c116
shasum : 70c33e0aa75a978b8a87a207bf488ecec8d10a87

BackTrack 3 Beta USB version (946 mb)

http://www.offensive-security.com/bt3b141207.rar.torrent
md5sum : bd0d8f507502787184b187f5a39288df
shasum : 853b80a77e3881e8084c797ba55077ead15f84ae

wiki:
http://backtrack.offensive-security.com/index.php/Main_Page

中文包：

http://www.remote-exploit.org/backtrack_download.html

Description: CD Image
Size: ~ 700 MB
MD5: 04ed8742fc8facd1ecc8c9f6f567c116
SHA: 70c33e0aa75a978b8a87a207bf488ecec8d10a87
Mirrors:
ftp://backtrack.mirrors.skynet.be/pub/backtrack/bt3b141207.iso
http://ftp.belnet.be/mirror/backtrack/bt3b141207.iso
ftp://ftp.heanet.ie/mirrors/backtrack/bt3b141207.iso
http://devsn.org/mirror/backtrack3/bt3b141207.iso
http://ftp.cc.uoc.gr/mirrors/linux/backtrack/bt3b141207.iso
http://backtrack.mirrors.skynet.be/pub/backtrack/bt3b141207.iso
http://mirror.switch.ch/ftp/mirror/backtrack/bt3b141207.iso
http://backtrack.unixheads.org/
ftp://ftp.cc.uoc.gr/mirrors/linux/backtrack/bt3b141207.iso
http://ftp.heanet.ie/mirrors/backtrack/bt3b141207.iso
Torrent: http://www.remote-exploit.org/bt3b141207.iso.torrent

Description: USB Version (Extended)
Size: ~ 946 MB
MD5: bd0d8f507502787184b187f5a39288df
SHA: 853b80a77e3881e8084c797ba55077ead15f84ae
Mirrors:
http://mirror.switch.ch/ftp/mirror/backtrack/bt3b141207.rar
ftp://ftp.heanet.ie/mirrors/backtrack/bt3b141207.rar
ftp://ftp.cc.uoc.gr/mirrors/linux/backtrack/bt3b141207.rar
http://backtrack.unixheads.org/
http://ftp.cc.uoc.gr/mirrors/linux/backtrack/bt3b141207.rar
ftp://backtrack.mirrors.skynet.be/pub/backtrack/bt3b141207.rar
http://ftp.heanet.ie/mirrors/backtrack/bt3b141207.rar
http://backtrack.mirrors.skynet.be/pub/backtrack/bt3b141207.rar
http://ftp.belnet.be/mirror/backtrack/bt3b141207.rar
Torrent: http://www.remote-exploit.org/bt3b141207.rar.torrent