EvilZone

I personally think you are right about Linux. You should try to learn to use it.
Backtrack or Kali is not great for everyday use so I suggest you run another distro (Ubuntu is fine) for that and then use Kali for pentest etc. Kali/BT are nice since they come pre configured with a lot of tools.
If you run KDE or Gnome or something else is not really relevant.
I didn't realize people still used DVDs to install OSs but you certainly don't need to order a DVD containing the OS to install BT. As already pointed out, google is your friend (in this particular case at least )

Thats an interesting concept.
Making the disk useless upon 'cracking' gonna think about that for a little.

If a forensics team uncovers an encrypted hdd they will make a raw copy first thing. They won't start cracking away trying to break the encryption. With a decent algorithm and a sufficently good password this won't matter much however.
If it is found decrypted they will ofc also make a copy in which case you are screwed if you don't manage to power of or unmount the drive.

We do not care about the logs in realtime. We can find the logs being stupid and just remove them. Though when something happens we can purge the logs. And if ofcourse we want to ban someone from accesing our servers we need to log the ip and ban it.

I'm not questioning your motives or the need to log, just saying that security is important partly because of all the logs being stored, since you mentioned that the logs are stored to maintain security

I also do not agree with the argument that privacy is irrelevant just because you "have nothing to hide" or that "nothing illegal is going on". If common sense is not enough to understand why, modern history should be.

We do log everything. And I mean absolutely everything, in and out. But this is to maintain our security, ..

The logs being stored are also a part of the reason for why good security is important. If the (old) logs can be stored offline on an encrypted, powered off disk that should be done to the greatest extent possible (within reason when it comes to the time it takes to manage such a policy of course).

No dont think thats gonna do much good.
Bruteforcing 26^6 and than a key that only has such a short lifespan is just not worth it.
Its gonna be a slow and tedious business.

Not to completely crack your statement but stealing someones MAC address is also going to ruin your own connection.
Your only option there is to send deautentication floods if your in physical range , this would make reconnecting for this person impossible.
Hes is likely gonna complain and drawing unwanted attention in your direction.
Just my 2 cents.

You are completely right. Although a 26^6 could be brute forced in hours with say a GTX460 it might not be worth the trouble in this particular case. Then comes the issues with the MAC if the key in fact are tied to the MAC address.

Nice Always fun to create some fine pixel art!

Any idea what would happen if an average user is investigated and found to have (for example) a TB of illegal  download material in different parts of the world?

By investigated you must mean that this user is a suspect and that the police has issued a warrant, entered the users appartment and taken the users computer?
So first you have to be  a suspect in a crime investigation. What happens next depends on what country you live in and the laws in said country.