I'm working with the code at the following gist and also pasted below:

http://gist.github.com/421550

I'd like to have execution of a separate thread (agent) continue
running until it sees the atom 'running' change to false.

Unfortunately, the program doesn't return from the send-off but
to my understanding it should.  Why won't it return?  I'm using
clojure 1.1.

TIA

;;;;;;;;;;;;;;;;

(ns nmanage)

(def running (atom true))

(defn process
  []
  (when @running
    (prn "hi")
    (Thread/sleep 1000))
  (recur))

;;;
(send-off (agent nil) (process))

(do
  (prn "this won't print - execution doesn't make it this far")
  (Thread/sleep 2000)
  (reset! running false))

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