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If you run this ticket as literate haskell program it works fine when

1. executed via ghci/runhaskell in ghc 6.12.3
2. executed as compiled file in both ghc 6.12.3 and 7.0.2/7.0.3

and it fails with a message " epollControl: permission denied (Operation not permitted)" when executed via runhaskell in ghc 7.0.2/7.0.3

> import Data.Iteratee
> import Data.Iteratee.IO
> import Data.Iteratee.Char

> main = fileDriver printLines "/etc/passwd"

some logs are attached