The following bug has been logged on the website:
Bug reference: 6654
Logged by: wbrana
Email address: wbrana@gmail.com
PostgreSQL version: 9.1.3
Operating system: Linux
Description:=20=20=20=20=20=20=20=20
CREATE INDEX idx_post_text ON posts USING gin
(to_tsvector('english'::regconfig, post_text::text))=20
select * from v_search WHERE to_tsvector('english', post_text) @@ 'europe'
returns no rows, but
select * from v_search WHERE to_tsvector('english', post_text) @@ 'japan'
returns row with "Japan and Europe"