threadDelay behavior 64-bit mac os x
threadDelay 1000000
works as expected in 7.0.1-x86_64
return immediately in DEVELOPMENT 7.1.20110131
hangs eating CPU in STABLE 7.0.1.20110201, 7.0.1.20110211to reproduce: fire up ghci
import Control.Concurrent
threadDelay 1000000