This bug was fixed in the package acpid - 1:2.0.7-1ubuntu1

---------------
acpid (1:2.0.7-1ubuntu1) natty; urgency=low

  * Merge from debian unstable (LP: #507778), remaining changes:
    - Replace init script with Upstart job
      + This does not load modules, unlike the init script, since these are
        all loaded by ACPI:* modaliases now (and thus by udev)
    - debian/control: Bump build-dependency on debhelper for Upstart-aware
      dh_installinit
    - debian/preinst, debian/acpid.install, debian/control, debian/rules:
      continue installing /etc/acpi/events/powerbtn and /etc/acpi/powerbtn.sh,
      deferring the migration to acpi-support-base; and drop the Recommends:
      on acpi-support-base for the same reason.
    - Source /usr/share/acpi-support/power-funcs in powerbtn.sh (LP: #508073)
    - debian/powerbtn.sh: ensure that /usr/share/acpi-support/power-funcs
      exists before sourcing it; note that acpid does not depend on
      acpi-support (which is fine, as it brings in lots of X dependencies
      not appropriate for servers); this fix will allow Ubuntu servers
      (especially those in VMs) to run acpid and catch and handle power
      button events again; LP: #570450
  * Dropped changes:
    - New patch, missing-includes, to fix missing includes of sys/types.h and
      sys/stat.h for umask() and stat() in acpid.c; fixes FTBFS: no longer
      needed
    - Update patch missing-includes to also fix the same missing includes in
      sock.c; this is all fixed in 2.0.x versions of acpid: no longer needed

acpid (1:2.0.7-1) unstable; urgency=low

  * Imported Upstream version 2.0.7

acpid (1:2.0.6-2) unstable; urgency=low

  * Added prepatch from 2.0.7 to remove superfluous logging. (Closes:
    #598198)
  * Added prepatch from 2.0.7 to add support for more buttons. (Closes:
    #600564) - thanks to Stanislav Maslovski
    <email address hidden>
  * Bumped Standards-Version to 3.9.1, no changes needed.

acpid (1:2.0.6-1) unstable; urgency=low

  * Imported Upstream version 2.0.6

acpid (1:2.0.5-1) unstable; urgency=low

  * Imported Upstream version 2.0.5

acpid (1:2.0.4-1) unstable; urgency=low

  * New Upstream version 2.0.4
  * Added source format file.

acpid (1:2.0.3-1) unstable; urgency=low

  * New Upstream version 2.0.3

acpid (1:2.0.2-1) unstable; urgency=low

  * New upstream version.
  * Bumped Standards-Version to 3.8.4, no changes needed.

acpid (1:2.0.1-2) unstable; urgency=low

  * Acpid does work on non-i386/amd64 archs but not on non-linux
    systems.
  * Prevent breakage of Xserver resulting from a may connection number
    that was set too low. (Closes: #565908) - thanks to Willi Mann
    <email address hidden>
  * Extended kacpimon description to explain the package a little bit
    better.
  * Escape unescaped dashes in manpage.

acpid (1:2.0.1-1) unstable; urgency=low

  * Imported Upstream version 2.0.1
  * Removed patch system which is no longer needed because upstream included
    all our patches.
  * Install kacpimon manpage.

acpid (1:2.0.0-2) unstable; urgency=low

  * Put kacpimon back into the right section and priority.
  * Make loading of all modules work with modules.dep files with
    relative paths. (Closes: #563915)
  * Do not include /etc/default/rcS in init script because it is not needed.

acpid (1:2.0.0-1) unstable; urgency=low

  * New Upstream version from new source tree that already incorporates the
    netlink patch..
  * Build kacpimon from the new source tree too.
 -- Lorenzo De Liso <email address hidden>   Tue, 23 Nov 2010 20:26:47 +0100