Victoria wrote:
Try xprop - this will envoke cursor, click on the window that you can't close, this will show you in the terminal the pid , something like: _NET_WM_PID(CARDINAL) = 13344. Then - "xprop | grep -i pid" - this will show you the process too. Then something like "ps -ef | grep pid"
This sounds like it might work. However, when that window was there, no process associated with K3b could be found on my machine. Anyway, I tried it on a window and grepped the output for PID, then did ps -A | grep <numeric PID> and out popped gnome-terminal. It's worth trying.
Mike