Comment 34 for bug 755459

Same probleme with a natty up to date :
happen 1 days after boot (uptime = 22h)

xwininfo: Please select the window about which you
          would like information by clicking the
          mouse in that window.

xwininfo: Window id: 0x3d24f88 (has no name)

  Absolute upper-left X: 947
  Absolute upper-left Y: 487
  Relative upper-left X: 947
  Relative upper-left Y: 487
  Width: 182
  Height: 248
  Depth: 24
  Visual: 0x21
  Visual Class: TrueColor
  Border width: 0
  Class: InputOutput
  Colormap: 0x20 (installed)
  Bit Gravity State: NorthWestGravity
  Window Gravity State: NorthWestGravity
  Backing Store State: NotUseful
  Save Under State: yes
  Map State: IsViewable
  Override Redirect State: yes
  Corners: +947+487 -791+487 -791-345 +947-345
  -geometry 182x248+947+487

Thank's