[exim] problem with filter execution

I have a strange problem with my exim ( version 4.30) . I have many
filters that uses pipe command , but the execution of this filters
delays exacts 6 minutes?? . I check my config but i dont have any
retry time or delay config ......

Thanks in advance

P.D: Sorry for my poor english
--
-- Fernando Gutierrez Perez --
gmeileando un poco :)