Comment 8 for bug 612341

This bug is fixed upstream in kernel 2.6.35.8. From the changelog:

commit cc64346cc6b102a93ae8f2cc021de152d122fd43
Author: Len Brown
Date: Tue Sep 28 22:57:02 2010 -0400

    ACPI: invoke DSDT corruption workaround on all Toshiba Satellite

    commit 100cf87788c0e9104f6fb1b0ff5f72f73fbbbea3 upstream.

    Our list of Toshiba Satellite models that require this workaround
    is growing -- so invoke the workaround for the entire product line.

    https://bugzilla.kernel.org/show_bug.cgi?id=14679

    Signed-off-by: Len Brown
    Signed-off-by: Greg Kroah-Hartman

And from comment #100 in the upstream bug at https://bugzilla.kernel.org/show_bug.cgi?id=14679

  DMI for all Toshiba Satellite

  http://www.spinics.net/lists/linux-acpi/msg29761.html
  and
  http://www.spinics.net/lists/linux-acpi/msg30002.html
  add

  Satellite C650D
  Satellite L650D-10J

  So rather than adding 2 to the list, lets combine all four
  into one that applies to all Toshiba Satellite. This means
  the workaround will be invoked for the entire product family.

A PPA of this kernel is available at http://kernel.ubuntu.com/~kernel-ppa/mainline/