missing first number if remaining times exceed 9:59

[easteregg]

on my x201s laptop, when the remaining battery lifetime exceeds 9hours 59minutes and should display 10:30 for example it display just 0:30 or instead of 11:25 it displays 1:25
thats a bit confusing ;)

some additional infos:

method return sender=:1.25 -> dest=:1.98 reply_serial=2
   array [
      object path "/org/freedesktop/UPower/devices/line_power_AC"
      object path "/org/freedesktop/UPower/devices/battery_BAT0"
   ]

easteregg@x201s:~$ python --version
Python 2.7.1+

easteregg@x201s:~$ uname -a
Linux x201s 2.6.38-10-generic #44-Ubuntu SMP Thu Jun 2 21:32:22 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

easteregg@x201s:~$ lsb_release -a
LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch
Distributor ID: Ubuntu
Description: Ubuntu 11.04
Release: 11.04
Codename: natty