Comment 15 for bug 420747

This is still happening in 12.04. The problem is that the reason variable coming from an IOError is an (errno, strerror) tuple, so
  reasonstr = "\nReason: %s" % reason if reason is not None else ""
raises a TypeError. You could change this to
  reasonstr = "\nReason: %s" % str(reason)

For reason == None, this would result in "Reason: None", which I think is better than "".

For reason == (123, 'Some error'), it would result in "Reason: (123, 'Some error')" instead of crashing.

Of course, the IOError itself should be avoided by some delay, as well, as heynnema suggested, but this patch would at least avoid the crash.