Traceback (most recent call last):
  File "/usr/bin/software-center", line 38, in <module>
    import softwarecenter.log
  File "/usr/share/software-center/softwarecenter/log.py", line 92, in <module>
    backupCount=5)
  File "/usr/lib/python2.6/logging/handlers.py", line 112, in __init__
    BaseRotatingHandler.__init__(self, filename, mode, encoding, delay)
  File "/usr/lib/python2.6/logging/handlers.py", line 64, in __init__
    logging.FileHandler.__init__(self, filename, mode, encoding, delay)
  File "/usr/lib/python2.6/logging/__init__.py", line 827, in __init__
    StreamHandler.__init__(self, self._open())
  File "/usr/lib/python2.6/logging/__init__.py", line 846, in _open
    stream = open(self.baseFilename, self.mode)
IOError: [Errno 13] Permission denied: '/home/username/.cache/software-center/software-center.log'