Traceback (most recent call last):
  File "/usr/sbin/update-apt-xapian-index", line 595, in <module>
    buildIndex(dbdir, addons, progress)
  File "/usr/sbin/update-apt-xapian-index", line 280, in buildIndex
    cache = apt.Cache(memonly=True)
  File "/usr/lib/python2.5/site-packages/apt/cache.py", line 62, in __init__
    self.open(progress)
  File "/usr/lib/python2.5/site-packages/apt/cache.py", line 75, in open
    self._cache = apt_pkg.GetCache(progress)
SystemError: E:read, still have 9168129 to read but none left, E:The package lists or status file could not be parsed or opened.