Hi BTS readers, sorry for late information. I was busy with developing MD5 cracking tool. Few days back backtrack 5 linux is relased. (know about Backtrack 4 r2 Linux).
Backtrack5 Linux~Penetration Testing Distribution
The backtrack 5 is based on Ubuntu Lucid 10.04 LTS. It supports both 32 bit and 64 bit systems. In Backtrack5, it is easy to access tools. BackTrack offers more than 300 penetration testing tool
http://www.backtrack-linux.org/downloads/
Screenshot of BackTrack 5 Security Distribution
Bugs
The backtrack 5 has some bugs. If you find any bugs, inform in this forum:
http://www.backtrack-linux.org/forums/backtrack-5-forums/
The fill help to fix the bugs and they can also fix it .