livecd installer crashes upon loading

Binary package hint: ubiquity

Version: Ubuntu Edgy Eft 6.10
/proc/cpuinfo:
processor: 0
cpu: 7447A, altivec supported
clock: 666.666000MHz
revision: 0.1 (pvr 8003 0101)
bogomips: 36.73
timebase: 18432000
platfom: PowerMac
machine: PowerBook6,4
motherboard: PowerBook6,4 MacRISC3 Power Macintosh
detected as: 287 (PowerBook G4, 12")
pmac flags: 0000001a
L2 cache: 512K unified
pmac-generation: NewWorld

Traceback (most recent call last):
File "/usr/bin/ubiquity", line 166, in ?
  main
File "/usr/bin/ubiquity", line 161, in main
  install( sys.argv[1] )
File "/usr/bin/ubiquity", line 56, in install
  wizard = ui.Wizard(distro)
File "/usr/lib/ubiquity/frontend/gtkui.py", line 177, in __init__
  self.customize_installer()
File "/usr/lib/ubiquity/frontend/gtkui.py", line 339, in customize_installer
  self.tzmap = TimezoneMap(self)
File "/usr/lib/ubiquity/frontend/gtkui.py", line 1827, in __init__
  self.tzdb = ubiquity.tz.Database()
File "/usr/lib/ubiquity/ubiquity/tz.py", line 182, in __init__
  self.locations.append( Location( line, iso3166 ) )
File "/usr/lib/ubiquity/ubiquity/tz.py", line 168, in __init__
  today=datetime.datetime.today()
ValueError: microsecond must be in 0..999999

cat /var/syslog | grep ubiquity:
Ubiquity 1.2.5
log-output -t ubiquity laptop-detect
Exception in GTK frontend (invoking crash handler):
Traceback (most recent call last):
File "/usr/bin/ubiquity", line 166, in ?
  main
File "/usr/bin/ubiquity", line 161, in main
  install( sys.argv[1] )
File "/usr/bin/ubiquity", line 56, in install
  wizard = ui.Wizard(distro)
File "/usr/lib/ubiquity/frontend/gtkui.py", line 177, in __init__
  self.customize_installer()
File "/usr/lib/ubiquity/frontend/gtkui.py", line 339, in customize_installer
  self.tzmap = TimezoneMap(self)
File "/usr/lib/ubiquity/frontend/gtkui.py", line 1827, in __init__
  self.tzdb = ubiquity.tz.Database()
File "/usr/lib/ubiquity/ubiquity/tz.py", line 182, in __init__
  self.locations.append( Location( line, iso3166 ) )
File "/usr/lib/ubiquity/ubiquity/tz.py", line 168, in __init__
  today=datetime.datetime.today()
ValueError: microsecond must be in 0..999999