[debian-users:43101] root loginで強制shutdown?

[<kidflower@xxxxxxxxxxx>]

いつもお世話になってます。山花と申します。

最近、"root loginで強制shutdown?"という現象が
あり、解決できずに困ってます。

/root/.gnome-errorsには

Gdk-ERROR **: X connection to :0.0 broken (explicit kill or server shutdown).
Gdk-ERROR **: X connection to :0.0 broken (explicit kill or server shutdown).
Gdk-ERROR **: X connection to :0.0 broken (explicit kill or server shutdown).
Gdk-ERROR **: X connection to :0.0 broken (explicit kill or server shutdown).

Gdk-WARNING **: Gdk-ERROR **: X connection to :0.0 broken (explicit kill or server shutdown).
GdkWindow 0x180002c unexpectedly destroyed

Gdk-WARNING **: GdkWindow 0x180002a unexpectedly destroyed

Gdk-WARNING **: GdkWindow 0x1800029 unexpectedly destroyed

Gdk-WARNING **: GdkWindow 0x1800018 unexpectedly destroyed
Gdk-ERROR **: X connection to :0.0 broken (explicit kill or server shutdown).
Gdk-ERROR **: X connection to :0.0 broken (explicit kill or server shutdown).
Gdk-ERROR **: X connection to :0.0 broken (explicit kill or server shutdown).
Gdk-ERROR **: X connection to :0.0 broken (explicit kill or server shutdown).

とあります。とくに何かしたという記憶はありません。
kernel-2.4.26-2-686, apt-getで最新securityにアップしてます。

user login は問題ありません。
解決方法をよろしく御指導くださいませ。