On hardware pack:

http://snapshots.linaro.org/precise/hwpacks/leb-origen/100/hwpack_linaro-leb-origen_20120521-100_armhf_supported.tar.gz

with ubuntu image:

http://snapshots.linaro.org/precise/images/ubuntu-desktop/170/linaro-precise-ubuntu-desktop-20120521-170.tar.gz

Every time, after run this command "sudo apt-get install glmark2-es2 mesa-utils-extra", I got a window pops up and shows:

Sorry, Linaro 12.05 has experienced an internal error.
If you notice further problems, try restarting the computer.

There must be something wrong, although I can dismiss this window. Those packages can be installed successfully. Below is the serial console output I got:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  glmark2-data
The following NEW packages will be installed:
  glmark2-data glmark2-es2 mesa-utils-extra
0 upgraded, 3 newly installed, 0 to remove and 2 not upgraded.
Need to get 3651 kB of archives.
After this operation, 5877 kB of additional disk space will be used.
Do you want to continue [Y/n]? Y
Get:1 http://ppa.launchpad.net/linaro-maintainers/overlay/ubuntu/ precise/main glmark2-data all 2012.03+bzr204+17+201204111602~precise1 [3401 kB]
Get:2 http://ports.ubuntu.com/ubuntu-ports/ precise/universe mesa-utils-extra armhf 8.0.1+git20110129+d8f7d6b-0ubuntu2 [24.3 kB]
Get:3 http://ppa.launchpad.net/linaro-maintainers/overlay/ubuntu/ precise/main glmark2-es2 armhf 2012.03+bzr204+17+201204111602~precise1 [226 kB]
Fetched 3651 kB in 10s (358 kB/s)                                              
Selecting previously unselected package glmark2-data.
(Reading database ... 107293 files and directories currently installed.)
Unpacking glmark2-data (from .../glmark2-data_2012.03+bzr204+17+201204111602~precise1_all.deb) ...
Selecting previously unselected package glmark2-es2.
Unpacking glmark2-es2 (from .../glmark2-es2_2012.03+bzr204+17+201204111602~precise1_armhf.deb) ...
Selecting previously unselected package mesa-utils-extra.
Unpacking mesa-utils-extra (from .../mesa-utils-extra_8.0.1+git20110129+d8f7d6b-0ubuntu2_armhf.deb) ...
Processing triggers for man-db ...
Setting up glmark2-data (2012.03+bzr204+17+201204111602~precise1) ...
Setting up glmark2-es2 (2012.03+bzr204+17+201204111602~precise1) ...
Setting up mesa-utils-extra (8.0.1+git20110129+d8f7d6b-0ubuntu2) ...
W: Duplicate sources.list entry http://ports.ubuntu.com/ubuntu-ports/ precise/main armhf Packages (/var/lib/apt/lists/ports.ubuntu.com_ubuntu-ports_dists_precise_main_binary-armhf_Packages)
W: Duplicate sources.list entry http://ports.ubuntu.com/ubuntu-ports/ precise/universe armhf Packages (/var/lib/apt/lists/ports.ubuntu.com_ubuntu-ports_dists_precise_universe_binary-armhf_Packages)
W: Duplicate sources.list entry http://ports.ubuntu.com/ubuntu-ports/ precise-security/main armhf Packages (/var/lib/apt/lists/ports.ubuntu.com_ubuntu-ports_dists_precise-security_main_binary-armhf_Packages)
W: Duplicate sources.list entry http://ports.ubuntu.com/ubuntu-ports/ precise-security/universe armhf Packages (/var/lib/apt/lists/ports.ubuntu.com_ubuntu-ports_dists_precise-security_universe_binary-armhf_Packages)
W: Duplicate sources.list entry http://ports.ubuntu.com/ubuntu-ports/ precise-updates/main armhf Packages (/var/lib/apt/lists/ports.ubuntu.com_ubuntu-ports_dists_precise-updates_main_binary-armhf_Packages)
W: Duplicate sources.list entry http://ports.ubuntu.com/ubuntu-ports/ precise-updates/universe armhf Packages (/var/lib/apt/lists/ports.ubuntu.com_ubuntu-ports_dists_precise-updates_universe_binary-armhf_Packages)
W: You may want to run apt-get update to correct these problems
linaro@linaro-ubuntu-desktop:~$