beta2 and blob's

Hi with beta2 i get

leak:relation "pg_largeobject_loid_pn_index" has refcnt 1 instead of 0

while running my script
that's an example throwing this message

UPDATE reports SET r_blob=lo_import('../reports.r_id.'|| CAST(r_id AS 
VARCHAR) || '.blob') WHERE r_blob IS NOT NULL

PS : everything seem to be done in the right way. My data is ok.

Daniel