@price
Grimwepa in easy debian problem happened with me too
so i did this (after updating sqeeze repo) by editing /etc/apt/source.list

apt-get install openjdk-6-jre-headless openjdk-6-jre openjdk-6-jre-lib openjdk-6-jre-zero openjdk-6-jre-headless xterm aircrack-ng

The older version looks to have problem getting targets-01.txt into grimwepa wich leads into emty aps slot

that should fix your problem (also xterm and aircrack-ng added)

You can add a lot of things to it like pyrit crunch etc...
But most of them needs to be compiled from the source code
after installing build-essntials