PTW plugin is attached at the server level, not client. The plugin is loaded in that screenshot, as indicative under the "server plugins" section right below the message you're reading.

Also, as it states, you can't unload a server plugin while it's running. If you want to temporarily disable it, rename the link/shared object in /opt/kismet/lib/kismet.

Thanks for the words regarding my site. I don't always have time to push packages to the repos, especially due to autobuilder, bleh. I'm off for the N97MiniTour with the Nokia Canada peeps soon, so I'll try and get something up; even if it's just a binary package attached to a post here.

I'LL DO IT FOR YOU BECAUSE YOU'RE SO NICE.