Hello, I'm able to reproduce this problem with stock configurations of dwm and conky in wheezy. Also happens with spectrwm-2.6.0.
How to reproduce: 1) start a dwm X session: startx /us/bin/dwm 2) start conky 3) start some other X client (e.g. xterm) - only needed if conky isn't floating when the other client is focused and conky looses focues, the bug is triggered. Refocusing conky won't help. If conky is started in floating mode, the bug is triggered immediately. These trigger scenarios works the same way in spectrwm. Debugging with GDB shows that indeed it is the Xdamage extensions emitting too many events. However, I wasn't able to reproduce this with the twm floating window manager. As this bug isn't common, it is quite likely that most floating window managers aren't affected. Yet the tilling window managers I tested trigger the bug in floating mode. All in all it seems rhis has something to do with how the WM treats conky. Kind regards, Ondřej Grover
