Public bug reported:

While Qa'ing apps in the software center I keep getting errors in the terminal 
- I've copied in the errors I see below. I'm blowing away the VM to do more 
testing, but logging the bug for historic purpses.  This only is happening on 
Quantal 64


quantal64@quantal64-VirtualBox:~$ SOFTWARE_CENTER_AGENT_INCLUDE_QA=1 
software-center
2013-03-04 18:04:56,464 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 
'None'
2013-03-04 18:04:56,482 - softwarecenter.db.database - INFO - open() database: 
path=None use_axi=True use_agent=True
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 607, in 
msg_reply_handler
    *message.get_args_list()))
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 69, in error_cb
    callback('')
  File 
"/usr/share/software-center/softwarecenter/backend/installbackend_impl/aptd.py",
 line 164, in _register_active_transactions_watch
    apt_daemon = client.get_aptdaemon(bus=bus)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/client.py", line 1698, in 
get_aptdaemon
    False),
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 241, in get_object
    follow_name_owner_changes=follow_name_owner_changes)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 248, in __init__
    self._named_service = conn.activate_name_owner(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 180, in 
activate_name_owner
    self.start_service_by_name(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 278, in 
start_service_by_name
    'su', (bus_name, flags)))
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in 
call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.Spawn.ChildExited: 
Launch helper exited with unknown return code 1
2013-03-04 18:05:04,841 - softwarecenter.backend.reviews - WARNING - Could not 
get usefulness from server, no username in config file
2013-03-04 18:05:04,867 - softwarecenter.fixme - WARNING - logs to the root 
logger: '('/usr/lib/python2.7/dist-packages/gi/importer.py', 51, 'find_module')'
2013-03-04 18:05:04,867 - root - ERROR - Could not find any typelib for 
LaunchpadIntegration
2013-03-04 18:05:05,230 - softwarecenter.ui.gtk3.app - INFO - 
show_available_packages: search_text is '', app is None.
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 607, in 
msg_reply_handler
    *message.get_args_list()))
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 69, in error_cb
    callback('')
  File 
"/usr/share/software-center/softwarecenter/backend/installbackend_impl/aptd.py",
 line 164, in _register_active_transactions_watch
    apt_daemon = client.get_aptdaemon(bus=bus)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/client.py", line 1698, in 
get_aptdaemon
    False),
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 241, in get_object
    follow_name_owner_changes=follow_name_owner_changes)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 248, in __init__
    self._named_service = conn.activate_name_owner(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 180, in 
activate_name_owner
    self.start_service_by_name(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 278, in 
start_service_by_name
    'su', (bus_name, flags)))
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in 
call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.Spawn.ChildExited: 
Launch helper exited with unknown return code 1
2013-03-04 18:05:14,168 - softwarecenter.db.pkginfo_impl.aptcache - INFO - 
aptcache.open()
2013-03-04 18:05:29,018 - softwarecenter.ui.gtk3.views.lobbyview - WARNING - 
skipping exhibit for: 'u'steam'' not available
2013-03-04 18:05:29,021 - softwarecenter.ui.gtk3.views.lobbyview - WARNING - 
skipping exhibit for: 'u'lordofultima'' not available
2013-03-04 18:05:29,022 - softwarecenter.ui.gtk3.views.lobbyview - WARNING - 
skipping exhibit for: 'u'machinarium'' not available
2013-03-04 18:05:29,023 - softwarecenter.ui.gtk3.views.lobbyview - WARNING - 
skipping exhibit for: 'u'splashtop-streamer'' not available
2013-03-04 18:05:51,225 - softwarecenter.db.update - INFO - 
'SCAApplicationParser'.make_doc: skipping region restricted app u'Comentarios 
Web' (region not whitelisted)
2013-03-04 18:05:52,376 - softwarecenter.db.update - INFO - 
'SCAApplicationParser'.make_doc: skipping region restricted app u"Bulleti 
d'esquerra de Calonge i Sant Antoni " (region not whitelisted)
2013-03-04 18:05:53,210 - softwarecenter.db.update - INFO - 
'SCAApplicationParser'.make_doc: skipping region restricted app u'FunBird 
Store' (region not whitelisted)
2013-03-04 18:05:53,212 - softwarecenter.db.update - INFO - 
'SCAApplicationParser'.make_doc: skipping region restricted app u'Forceline' 
(region not whitelisted)
2013-03-04 18:05:53,212 - softwarecenter.db.update - INFO - 
'SCAApplicationParser'.make_doc: skipping region restricted app 
u'PyV\xe4sttrafik' (region not whitelisted)
2013-03-04 18:05:54,791 - softwarecenter.db.utils - INFO - 
software-center-agent finished with status 0
2013-03-04 18:05:54,792 - softwarecenter.db.database - INFO - reopen() database
2013-03-04 18:05:54,792 - softwarecenter.db.database - INFO - open() database: 
path=None use_axi=True use_agent=True
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/defer/__init__.py", line 489, in 
_inline_callbacks
    result = gen.send(result)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/client.py", line 1624, in 
_run_transaction_helper
    daemon = get_aptdaemon(self.bus)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/client.py", line 1698, in 
get_aptdaemon
    False),
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 241, in get_object
    follow_name_owner_changes=follow_name_owner_changes)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 248, in __init__
    self._named_service = conn.activate_name_owner(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 180, in 
activate_name_owner
    self.start_service_by_name(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 278, in 
start_service_by_name
    'su', (bus_name, flags)))
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in 
call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.Spawn.ChildExited: 
Launch helper exited with unknown return code 1
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/defer/__init__.py", line 489, in 
_inline_callbacks
    result = gen.send(result)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/client.py", line 1624, in 
_run_transaction_helper
    daemon = get_aptdaemon(self.bus)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/client.py", line 1698, in 
get_aptdaemon
    False),
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 241, in get_object
    follow_name_owner_changes=follow_name_owner_changes)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 248, in __init__
    self._named_service = conn.activate_name_owner(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 180, in 
activate_name_owner
    self.start_service_by_name(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 278, in 
start_service_by_name
    'su', (bus_name, flags)))
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in 
call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.Spawn.ChildExited: 
Launch helper exited with unknown return code 1
2013-03-04 18:06:12,879 - softwarecenter.db.pkginfo_impl.aptcache - ERROR - 
simulate failed
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/aptdaemon/client.py", line 1595, in 
on_error
    error.raise_exception()
  File "/usr/lib/python2.7/dist-packages/defer/__init__.py", line 489, in 
_inline_callbacks
    result = gen.send(result)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/client.py", line 1624, in 
_run_transaction_helper
    daemon = get_aptdaemon(self.bus)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/client.py", line 1698, in 
get_aptdaemon
    False),
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 241, in get_object
    follow_name_owner_changes=follow_name_owner_changes)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 248, in __init__
    self._named_service = conn.activate_name_owner(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 180, in 
activate_name_owner
    self.start_service_by_name(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 278, in 
start_service_by_name
    'su', (bus_name, flags)))
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in 
call_blocking
    message, timeout)
DBusException: org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper 
exited with unknown return code 1
2013-03-04 18:06:15,064 - softwarecenter.backend.spawn_helper - WARNING - exit 
code 1 from helper for '['/usr/share/software-center/piston_generic_helper.py', 
'--datadir', '/usr/share/software-center/', 'SoftwareCenterRecommenderAPI', 
'recommend_app', '{"pkgname": "crazyblox"}']'
2013-03-04 18:06:15,069 - softwarecenter.backend.spawn_helper - WARNING - got 
error from helper: 'WARNING:__main__:404: {'status': '404', 'content-length': 
'58', 'via': '1.1 papeda.canonical.com:3128 (squid/2.7.STABLE7)', 'x-cache': 
'MISS from papeda.canonical.com', 'x-cache-lookup': 'HIT from 
papeda.canonical.com:3128', 'strict-transport-security': 'max-age=2592000', 
'vary': 'Accept-Encoding', 'server': 'Apache/2.2.22 (Ubuntu)', 'etag': 
'"2dab09235569ff8132981abd0cc3ec17"', 'cache-control': 'max-age=300', 'date': 
'Mon, 04 Mar 2013 18:06:15 GMT', 'content-type': 'text/html; charset=utf-8', 
'-content-encoding': 'gzip'}
'
2013-03-04 18:06:15,070 - softwarecenter.db.categories - WARNING - Error while 
accessing the recommender service: WARNING:__main__:404: {'status': '404', 
'content-length': '58', 'via': '1.1 papeda.canonical.com:3128 
(squid/2.7.STABLE7)', 'x-cache': 'MISS from papeda.canonical.com', 
'x-cache-lookup': 'HIT from papeda.canonical.com:3128', 
'strict-transport-security': 'max-age=2592000', 'vary': 'Accept-Encoding', 
'server': 'Apache/2.2.22 (Ubuntu)', 'etag': 
'"2dab09235569ff8132981abd0cc3ec17"', 'cache-control': 'max-age=300', 'date': 
'Mon, 04 Mar 2013 18:06:15 GMT', 'content-type': 'text/html; charset=utf-8', 
'-content-encoding': 'gzip'}

2013-03-04 18:06:15,079 - softwarecenter.ui.gtk3.widgets.recommendations
- WARNING - Error while accessing the recommender agent:
WARNING:__main__:404: {'status': '404', 'content-length': '58', 'via':
'1.1 papeda.canonical.com:3128 (squid/2.7.STABLE7)', 'x-cache': 'MISS
from papeda.canonical.com', 'x-cache-lookup': 'HIT from
papeda.canonical.com:3128', 'strict-transport-security': 'max-
age=2592000', 'vary': 'Accept-Encoding', 'server': 'Apache/2.2.22
(Ubuntu)', 'etag': '"2dab09235569ff8132981abd0cc3ec17"', 'cache-
control': 'max-age=300', 'date': 'Mon, 04 Mar 2013 18:06:15 GMT',
'content-type': 'text/html; charset=utf-8', '-content-encoding': 'gzip'}

quantal64@quantal64-VirtualBox:~$

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: software-center 5.4.1.4
ProcVersionSignature: Ubuntu 3.5.0-25.39-generic 3.5.7.4
Uname: Linux 3.5.0-25-generic x86_64
ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
Date: Mon Mar  4 18:07:11 2013
InstallationDate: Installed on 2013-02-21 (10 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: software-center
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: software-center (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug quantal running-unity

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https://bugs.launchpad.net/bugs/1144908

Title:
  Software center crashes in VM while Qa'ing apps

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