Another traceback if it helps

jamie@zander:~/develop/entertainer/bug-224691-2$ bzr push bzr+ssh://<email address hidden>/~jamie-bennett-gmail/entertainer/Bug-224691-2
/ [===                                                       ] Transferring 0/4Connection to bazaar.launchpad.net closed by remote host.
bzr: ERROR: bzrlib.errors.TooManyConcurrentRequests: The medium '<bzrlib.smart.medium.SmartSSHClientMedium object at 0xb762b3ec>' has reached its concurrent request limit. Be sure to finish_writing and finish_reading on the currently open request.

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 834, in run_bzr_catch_errors
    return run_bzr(argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 790, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 492, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.5/site-packages/bzrlib/builtins.py", line 799, in run
    revision_id=revision_id)
  File "/usr/lib/python2.5/site-packages/bzrlib/bzrdir.py", line 204, in clone_on_transport
    revision_id=revision_id)
  File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line 127, in read_locked
    return unbound(self, *args, **kwargs)
  File "/usr/lib/python2.5/site-packages/bzrlib/repository.py", line 997, in clone
    self.copy_content_into(dest_repo, revision_id)
  File "/usr/lib/python2.5/site-packages/bzrlib/repository.py", line 907, in copy_content_into
    return InterRepository.get(self, destination).copy_content(revision_id)
  File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line 167, in write_locked
    self.unlock()
  File "/usr/lib/python2.5/site-packages/bzrlib/inter.py", line 110, in unlock
    self.target.unlock()
  File "/usr/lib/python2.5/site-packages/bzrlib/repository.py", line 983, in unlock
    self.control_files.unlock()
  File "/usr/lib/python2.5/site-packages/bzrlib/lockable_files.py", line 270, in unlock
    self._lock.unlock()
  File "/usr/lib/python2.5/site-packages/bzrlib/lockdir.py", line 307, in unlock
    self.confirm()
  File "/usr/lib/python2.5/site-packages/bzrlib/lockdir.py", line 395, in confirm
    info = self.peek()
  File "/usr/lib/python2.5/site-packages/bzrlib/lockdir.py", line 418, in peek
    info = self._read_info_file(self._held_info_path)
  File "/usr/lib/python2.5/site-packages/bzrlib/lockdir.py", line 408, in _read_info_file
    return self._parse_info(self.transport.get(path))
  File "/usr/lib/python2.5/site-packages/bzrlib/transport/remote.py", line 184, in get
    return StringIO(self.get_bytes(relpath))
  File "/usr/lib/python2.5/site-packages/bzrlib/transport/remote.py", line 188, in get_bytes
    request = self.get_smart_medium().get_request()
  File "/usr/lib/python2.5/site-packages/bzrlib/smart/medium.py", line 417, in get_request
    return SmartClientStreamMediumRequest(self)
  File "/usr/lib/python2.5/site-packages/bzrlib/smart/medium.py", line 592, in __init__
    raise errors.TooManyConcurrentRequests(self._medium)
TooManyConcurrentRequests: The medium '<bzrlib.smart.medium.SmartSSHClientMedium object at 0xb762b3ec>' has reached its concurrent request limit. Be sure to finish_writing and finish_reading on the currently open request.

bzr 1.3.1 on python 2.5.2.final.0 (linux2)
arguments: ['/usr/bin/bzr', 'push', 'bzr+ssh://<email address hidden>/~jamie-bennett-gmail/entertainer/Bug-224691-2']
encoding: 'UTF-8', fsenc: 'UTF-8', lang: 'en_GB.UTF-8'
plugins:
  bzrtools             /usr/lib/python2.5/site-packages/bzrlib/plugins/bzrtools [1.3.0]
  gtk                  /usr/lib/python2.5/site-packages/bzrlib/plugins/gtk [0.93.0]
  launchpad            /usr/lib/python2.5/site-packages/bzrlib/plugins/launchpad [unknown]
*** Bazaar has encountered an internal error.
    Please report a bug at https://bugs.launchpad.net/bzr/+filebug
    including this traceback, and a description of what you
    were doing when the error occurred.
/usr/lib/python2.5/site-packages/bzrlib/lockable_files.py:110: UserWarning: file group LockableFiles(<bzrlib.transport.local.LocalTransport url=file:///home/jamie/develop/entertainer/bug-224691-2/.bzr/repository/>) was not explicitly unlocked
  warn("file group %r was not explicitly unlocked" % self)