clean up run/stream a bit
clean up run/stream a bit

Ignore-this: eef86fb176e9cf5ce8f75fb889355844

darcs-hash:20101020082347-dcabc-9cd12f800b31a87e35dcc0b9335267f80a64fde8.gz

rrnewton/accelerate,wilbowma/accelerate,sjfloat/accelerate,wilbowma/accelerate,robeverest/accelerate,robeverest/accelerate