Hi Dieter,
sorry, I completely forgot about the second issue. Can you check whether
there actually IS a window? For example, try pgrep-ing for keepass and
also try "xprop"-selecting that window on an empty workspace (where it's
not covered by other windows).
If there isn't actually a window, this
with background it looks like so (set via nitrogen)
http://i.imgur.com/RX7syWq.png
however it seems like if i set the background again after ssh-add finished, the
background shows fine without the ghost window. not 100% sure yet on the
conditions that trigger the issue. i can play with it a bit m