Alexander, thank you for reporting this and helping make Ubuntu better. Please 
execute the following command, as it will automatically gather debugging 
information, in a terminal:
apport-collect 947833
When reporting bugs in the future please use apport by using 'ubuntu-bug' and 
the name of the package affected. You can learn more about this functionality 
at https://wiki.ubuntu.com/ReportingBugs.

** No longer affects: libreoffice (Ubuntu)

** Tags removed: calc clipboard cpu libreoffice nvidia xorg

** Changed in: xorg (Ubuntu)
       Status: New => Incomplete

** Description changed:

  Step to reproduce:
  1) open Calc
  2) type something
  3) make selection of some cells
  4) press Ctrl+C
  
  After this 'X' process begining to eat 100% cpu until "Calc" application is 
being closed.
  It looks like that this moving dots around selection (animation which appears 
right after Ctrl+C) are causing this behaviour.
  
  Tested on libreoffice-calc 3.4.3, 3.4.4 and 3.4.5. All theese versions are 
affected.
  Also tested on "Write". "Write" is not affected. Copying to clipboard doesn't 
eat cpu.
  My config:
  - GeForce 7300 GT
  - AMD Athlon(tm) 64 Processor 3000+
  - 512Mb ram
  - Ubuntu 11.10
  - 3.0.0-16-generic kernel
  - nvidia 295.20 proprietary video driver.
  - dual-monitor configuration
  - packages had been installed manually (ubuntu network installation), only 
minimum set of packages for xfce to work. So it's not default Ubuntu 
installation from cd/usb with default set of packages.
  
- 
- UPD: I've found workaround: go to "Tools/Options/View" and uncheck "Graphics 
output: Anti-aliasing". Now copying to clipboard doesn't eat cpu.
+ WORKAROUND: "Tools/Options/View" and uncheck "Graphics output: Anti-
+ aliasing". Now copying to clipboard doesn't eat cpu.

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https://bugs.launchpad.net/bugs/947833

Title:
  When copying selection to clipboard in LibreOffice Calc 'X' process
  begining to eat 100% cpu

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