bug: Lock table is out of available locks

[JUANVAQUEROPONC]

I did:
bogofilter -s < spam.mbox
for i in ~/Mail/*; do bogofilter -n < "$i"; done

I'm getting with some of the last ham mboxes:
Lock table is out of available locks
bogofilter: (db) db_set_dbvalue( 'shoul'd' ), err: 12, Cannot allocate memory
bogofilter: db_close called with transaction still open, program fault!
Lock table is out of available object entries

I'm using Debian unstable bogofilter_0.93.1-1 on x86