While updating Fedora 7 to the latest packages using pirut
23-07-2007, around 23:00 BST
I got this unhandled exception. It happened only once/

Component: Software Updater
Summary: TBedf28128 Progress.py:85:callback:TypeError: unsupported operand
type(s) for /: 'int' and 'NoneType'

Traceback (most recent call last):
  File "/usr/sbin/pup", line 409, in _apply
    self.applyChanges(self.mainwin)
  File "/usr/lib/python2.5/site-packages/pirut/__init__.py", line 726, in
applyChanges
    self.runTransaction(mainwin)
  File "/usr/lib/python2.5/site-packages/pirut/__init__.py", line 701, in
runTransaction
    tserrors = yum.YumBase.runTransaction(self, tsprog)
  File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 540, in
runTransaction
    errors = self.ts.run(cb.callback, '')
  File "/usr/lib/python2.5/site-packages/pirut/Progress.py", line 85, in callback
    self.progress.set_fraction(self.num / self.total * (1 - PREP) + PREP)
TypeError: unsupported operand type(s) for /: 'int' and 'NoneType'

Local variables in innermost frame:
what: 8
h: (<rpm.hdr object at 0xb856e90>,
u'//var/cache/yum/updates/packages/kdesdk-3.5.7-6.fc7.i386.rpm')
self: <pirut.Progress.PirutTransactionProgress instance at 0xba92fac>
logmsg:
amount: 0
user:
total: 0
PREP: 0.25