最近我一直在检查我的日志，发现两个我不明白的奇怪错误。
第一个：
May 22 08:11:00 localhost dbus: [system] Rejected send message, 1 matched rules; type="method_call", sender=":1.25" (uid=42 pid=2827 comm="gnome-power-manager) interface="org.freedesktop.Hal.Device.LaptopPanel" member="GetBrightness" error name="(unset)" requested_reply=0 destination=":1.7" (uid=0 pid=2155 comm="hald))q
第二个（这个重复了很多次）：
May 22 16:14:55 localhost NetworkManager[1991]: <warn> error requesting auth for org.freedesktop.NetworkManager.enable-disable-wwan: (6) Remote Exception invoking org.freedesktop.PolicyKit1.Authority.CheckAuthorization() on /org/freedesktop/PolicyKit1/Authority at name org.freedesktop.PolicyKit1: org.freedesktop.DBus.Error.NameHasNoOwner: Remote Exception invoking org.freedesktop.DBus.GetConnectionUnixUser() on / at name org.freedesktop.DBus: org.freedesktop.DBus.Error.NameHasNoOwner: Could not get UID of name ':1.49': no such name
有谁知道这些是什么意思？