[SF#502437] rogue reactor and unittest in short, the nosy reactor was modifying the nosy list. That code had been there for a long time, and I suspect it was there because we weren't generating the nosy list correctly in other places of the code. We're now doing that, so the nosy-modifying code can go away from the nosy reactor.

--- a/CHANGES.txt	Fri Jan 11 22:59:01 2002 +0000
+++ b/CHANGES.txt	Fri Jan 11 23:22:29 2002 +0000
@@ -11,6 +11,7 @@
  . missed a "from i18n import _" in date.py
  . #501690 ] MIGRATION.txt incomplete
  . #502342 ] pipe interface
+ . #502437 ] rogue reactor and unittest
 
 2002-01-08 - 0.4.0b1
 Feature: