Uhm... by the same logic, if it was a XYZ problem, both 64 and 32 bit version should give the same error...

IMHO it's a graphics driver issue, likely ATI-related. These two threads may help:

http://ubuntuforums.org/showthread.php?t=1492193
http://ubuntuforums.org/showthread.php?t=1585127

Can you try this:

kwriteconfig --file kwinrc --group Compositing --key Enabled --type bool false

Found on the KDE forums: http://forum.kde.org/viewtopic.php?f=111&t=91294&p=176932#p176932

Infraction and warning given - next time you'll be banned.

Infraction given, thread closed.

Are you sniffing someone else's network?

Ahem...you're "pentesting" other people's wireless networks, obviously without having a single clue about what you are doing. This is illegal, it is not condoned here, nor will you get any help from...