me and a colleague also can confirm this problem on Lenovo T410. I found
another bug report with a similar symptom

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/746084 
and also a link to a workaround: 
http://souriguha.wordpress.com/2011/03/08/how-to-solve-problem-with-thinkpadkslowd-kworker-on-linux-kernel-2-35-2-36/

This seems to fix it for me. Maybe others can try that? The fix is

#echo N> /sys/module/drm_kms_helper/parameters/poll

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https://bugs.launchpad.net/bugs/926714

Title:
  continuous jerky mouse movements while using nouveau driver in 12.04

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