large svn repository import Memory Error exception raised

When importing a large repository (more than 10000 revision) with 5-10 branches/tags from a svn repository of 30 GB a MemoryError exception is raised.

I have 6 GB of RAM and I checked the ram consumptions of the bazaar process while importing and it was about 500-600 MB all the times.

Here's the log:

C:\bzr\Trunk>bzr svn-import c:\playall-2009-04-30\var\svn\playall
Using repository layout: root
bzr: ERROR: exceptions.MemoryError:

Traceback (most recent call last):
  File "bzrlib\commands.pyo", line 716, in exception_to_return_code
  File "bzrlib\commands.pyo", line 911, in run_bzr
  File "bzrlib\commands.pyo", line 547, in run_argv_aliases
  File "C:/Program Files (x86)/Bazaar/plugins\svn\commands.py", line 163, in run

  File "C:/Program Files (x86)/Bazaar/plugins\svn\convert.py", line 268, in convert_repository
  File "C:/Program Files (x86)/Bazaar/plugins\svn\fetch.py", line 1251, in fetch

  File "C:/Program Files (x86)/Bazaar/plugins\svn\fetch.py", line 1175, in _fetch_revisions
  File "C:/Program Files (x86)/Bazaar/plugins\svn\fetch.py", line 1120, in _fetch_revision_switch
  File "C:/Program Files (x86)/Bazaar/plugins\svn\errors.py", line 127, in convert
  File "C:/Program Files (x86)/Bazaar/plugins\svn\fetch.py", line 906, in report_inventory_contents
  File "C:/Program Files (x86)/Bazaar/plugins\svn\fetch.py", line 403, in close
  File "C:/Program Files (x86)/Bazaar/plugins\svn\fetch.py", line 591, in _close

  File "bzrlib\knit.pyo", line 900, in add_lines
  File "bzrlib\knit.pyo", line 959, in _add
  File "bzrlib\knit.pyo", line 1765, in _merge_annotations
  File "bzrlib\knit.pyo", line 1126, in _get_content
  File "bzrlib\knit.pyo", line 1949, in _get_content
  File "bzrlib\knit.pyo", line 2008, in _get_one_work
  File "bzrlib\knit.pyo", line 1189, in _raw_map_to_record_map
  File "bzrlib\knit.pyo", line 1777, in _parse_record
  File "bzrlib\knit.pyo", line 1807, in _parse_record_unchecked
MemoryError

bzr 1.13 on python 2.5.2 (win32)
arguments: ['bzr', 'svn-import', 'c:\\playall-2009-04-30\\var\\svn\\playall']
encoding: 'cp1252', fsenc: 'mbcs', lang: None
plugins:
  bzrtools C:\Program Files (x86)\Bazaar\plugins\bzrtools [1.13]
  fastimport C:\Program Files (x86)\Bazaar\plugins\fastimport [0.8dev]

  launchpad C:\Program Files (x86)\Bazaar\plugins\launchpad [unknown]

  netrc_credential_store C:\Program Files (x86)\Bazaar\plugins\netrc_credential_
store [unknown]
  qbzr C:\Program Files (x86)\Bazaar\plugins\qbzr [0.9.8]
  svn C:\Program Files (x86)\Bazaar\plugins\svn [0.5.3]
*** 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.