I'm randomly getting one of those in "hg paths" if zeroconf is enabled, even
without any repo being served:

$ hg paths
Exception in thread Thread-2 (most likely raised during interpreter shutdown):
Traceback (most recent call last):
  File "/usr/lib/python2.5/threading.py", line 486, in __bootstrap_inner
  File "hgext/zeroconf/Zeroconf.py", line 936, in run
  File "hgext/zeroconf/Zeroconf.py", line 1297, in wait
  File "/usr/lib/python2.5/threading.py", line 240, in wait
<type 'exceptions.ValueError'>: list.remove(x): x not in list
Unhandled exception in thread started by
Error in sys.excepthook:

Original exception was:

$