reconcile leaves a huge unneeded file behind

I have a 1.14 shared repository for which "bzr check" was reporting parent errors. As advised I ran "bzr reconcile"; it printed this to .bzr.log:
mer. 2010-02-24 23:22:24 +0100
0.023 bazaar version: 2.2.0dev1
0.023 bzr arguments: [u'reconcile', u'-v']
0.033 looking for plugins in /home/guilhem/.bazaar/plugins
0.176 looking for plugins in /home/mysql_src/logiciels/bzr_versions/bzr.dev/bzrlib/plugins
0.178 looking for plugins in /usr/lib/python2.6/dist-packages/bzrlib/plugins
0.180 encoding stdout as sys.stdout encoding 'UTF-8'
1607.515 Resizing the inventory entry cache from 10240 to 13952
11387.231 Resizing the inventory entry cache from 13952 to 18798
17848.368 Transferred: 0kB (0.0kB/s r:0kB w:0kB)
17848.368 return code 0

so, no sign of failure. Still it left this file in .bzr/repository/uploads:
y74vnm919853u01sunmn.reconcile (425MB).
John A. Meinel explained that this is an unneeded file, so it would be great if bzr removed it automatically.