ubuntuone-syncdaemon fails to sync (fails to verify SSL certificate)

Ubuntu One will not sync. When started via the control panel, status stays at Loading; when started manually from a terminal with --debug:

2012-06-18 09:41:10,670 - ubuntuone.SyncDaemon.Main - INFO - hash queue empty. We are ready!
2012-06-18 09:41:10,670 - ubuntuone.SyncDaemon.EQ - DEBUG - push_event: SYS_LOCAL_RESCAN_DONE, kwargs: {}
2012-06-18 09:41:10,670 - ubuntuone.SyncDaemon.StateManager - DEBUG - received event 'SYS_LOCAL_RESCAN_DONE'
2012-06-18 09:41:10,670 - ubuntuone.SyncDaemon.StateManager - DEBUG - Transition LOCAL_RESCAN --[SYS_LOCAL_RESCAN_DONE]--> READY (queues: IDLE; connection: Not User With Network)
2012-06-18 09:41:10,671 - ubuntuone.SyncDaemon.EQ - DEBUG - push_event: SYS_STATE_CHANGED, kwargs: {'state': READY (error=False connected=False online=False) Queue: IDLE Connection: Not User With Network}
2012-06-18 09:41:10,671 - ubuntuone.SyncDaemon.InteractionInterfaces - DEBUG - handle_SYS_STATE_CHANGED: args (<ubuntuone.syncdaemon.interaction_interfaces.SyncdaemonEventListener object at 0x2c8a3d0>,), kwargs {'state': READY (error=False connected=False online=False) Queue: IDLE Connection: Not User With Network}.
2012-06-18 09:41:10,671 - ubuntuone.SyncDaemon.InteractionInterfaces - DEBUG - handle_SYS_STATE_CHANGED: result None.
2012-06-18 09:41:10,732 - ubuntuone.SyncDaemon.EQ - DEBUG - push_event: SYS_USER_CONNECT, kwargs: *
2012-06-18 09:41:10,732 - ubuntuone.SyncDaemon.StateManager - DEBUG - received event 'SYS_USER_CONNECT'
2012-06-18 09:41:10,732 - ubuntuone.SyncDaemon.StateManager - DEBUG - sending event to ConnectionManager
2012-06-18 09:41:10,733 - ubuntuone.SyncDaemon.ConnectionManager - DEBUG - Internal transition 'Not User With Network' -> 'With User With Network'
2012-06-18 09:41:10,736 - twisted - INFO - /etc/resolv.conf changed, reparsing
2012-06-18 09:41:10,736 - twisted - INFO - Resolver added ('8.8.8.8', 53) to server list
2012-06-18 09:41:10,736 - twisted - INFO - Resolver added ('8.8.4.4', 53) to server list
2012-06-18 09:41:10,737 - twisted - INFO - DNSDatagramProtocol starting on 12154
2012-06-18 09:41:10,737 - twisted - INFO - Starting protocol <twisted.names.dns.DNSDatagramProtocol object at 0x29c5250>
2012-06-18 09:41:10,738 - ubuntuone.SyncDaemon.StateManager - DEBUG - ConnectionManager returned None
2012-06-18 09:41:10,820 - ubuntuone.SyncDaemon.ActionQueue - DEBUG - SRV lookup done, choosing a server.
2012-06-18 09:41:10,820 - ubuntuone.SyncDaemon.ActionQueue - DEBUG - Using record: <RR name=_https._tcp.fs.ubuntuone.com type=SRV class=IN ttl=600s auth=False>
2012-06-18 09:41:10,821 - twisted - ERROR - Unhandled error in Deferred:
Unhandled error in Deferred:
2012-06-18 09:41:10,822 - twisted - ERROR - Unhandled Error
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 368, in callback
    self._startRunCallbacks(result)
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 464, in _startRunCallbacks
    self._runCallbacks()
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 551, in _runCallbacks
    current.result = callback(current.result, *args, **kw)
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1187, in unwindGenerator
    return _inlineCallbacks(None, gen, Deferred())
--- <exception caught here> ---
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1045, in _inlineCallbacks
    result = g.send(result)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/action_queue.py", line 858, in _make_connection
    ssl_context = get_ssl_context(self.disable_ssl_verify)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol/ubuntuone/storageprotocol/context.py", line 105, in get_ssl_context
    'No hostname specified. Unable to verify SSL certificate.')
twisted.internet.error.CertificateError: No hostname specified. Unable to verify SSL certificate.

Unhandled Error
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 368, in callback
    self._startRunCallbacks(result)
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 464, in _startRunCallbacks
    self._runCallbacks()
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 551, in _runCallbacks
    current.result = callback(current.result, *args, **kw)
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1187, in unwindGenerator
    return _inlineCallbacks(None, gen, Deferred())
--- <exception caught here> ---
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1045, in _inlineCallbacks
    result = g.send(result)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/action_queue.py", line 858, in _make_connection
    ssl_context = get_ssl_context(self.disable_ssl_verify)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol/ubuntuone/storageprotocol/context.py", line 105, in get_ssl_context
    'No hostname specified. Unable to verify SSL certificate.')
twisted.internet.error.CertificateError: No hostname specified. Unable to verify SSL certificate.
2012-06-18 09:41:10,823 - twisted - INFO - (UDP Port 12154 Closed)
2012-06-18 09:41:10,823 - twisted - INFO - Stopping protocol <twisted.names.dns.DNSDatagramProtocol object at 0x29c5250>

Starting ubuntuone-syncdaemon with --disable-ssl-verify appears to work as a temporary workaround.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: ubuntuone-client 3.0.1-0ubuntu1.1
ProcVersionSignature: Ubuntu 3.4.0-5.11-generic 3.4.0
Uname: Linux 3.4.0-5-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.2.3-0ubuntu3
Architecture: amd64
Date: Mon Jun 18 09:42:20 2012
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120616)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=fr_CA:fr
 TERM=xterm
 PATH=(custom, no user)
 LANG=fr_CA.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntuone-client
UpgradeStatus: No upgrade log present (probably fresh install)