kpackage reports system error after update on Karmic Alpha 4

[Mack]

Error Type: Error Value: 'PackageKitCache' object has no attribute '_dict' File : /usr/share/PackageKit/helpers/apt/aptBackend.py, line 1966, in main() File : /usr/share/PackageKit/helpers/apt/aptBackend.py, line 1963, in main run(args, options.single) File : /usr/share/PackageKit/helpers/apt/aptBackend.py, line 1925, in run backend.dispatcher(args) File : /usr/lib/python2.6/dist-packages/packagekit/backend.py, line 643, in dispatcher self.dispatch_command(args[0], args[1:]) File : /usr/lib/python2.6/dist-packages/packagekit/backend.py, line 540, in dispatch_command self.get_updates(filters) File : /usr/share/PackageKit/helpers/apt/aptBackend.py, line 653, in get_updates for pkg in self._cache.getChanges(): File : /usr/lib/python2.6/dist-packages/apt/cache.py, line 164, in getChanges for p in self: File : /usr/share/PackageKit/helpers/apt/aptBackend.py, line 196, in __iter__ for pkgname in sorted(self._dict.keys()):