Sorry, I would said: 'I didn't have this bug with Precise and *Quantal*' I've this bug when using Kernel 3.8 and newer. When using Precise 12.04.0 or Quantal 12.10, I didn't have this bug because the version of the kernel is < 3.8. But with Precise 12.04.3 (kernel 3.8), I guess this bug is there :-)
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