Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/screenlets/__init__.py", line 1450, in expose
    self.on_draw(ctx)
  File "/usr/share/screenlets/ACPIBattery/ACPIBatteryScreenlet.py", line 198, in on_draw
    (charge_status,present_rate,remaining,last_full)=self.getValue()
  File "/usr/share/screenlets/ACPIBattery/ACPIBatteryScreenlet.py", line 189, in getValue
    if int(present_rate)==0: present_rate='1000';
UnboundLocalError: local variable 'present_rate' referenced before assignment