Version: (using KDE KDE 3.5.6) Installed from: Ubuntu Packages OS: Linux - I plug in my usb-stick. - Dialog opens for asking what to do (I do *not* want KDE to mount it!) - Now I can choose "Do nothing" and click OK or I can press cancel... Anyway: the device gets mounted right after the dialog closes.
May be kubuntu specific, can't reproduce with debian etch.
This one is kubuntu specific, see https://bugs.launchpad.net/ubuntu/+source/kdebase/+bug/69561