我刚刚安装了 Ubuntu 14.10，还安装了一些程序，比如 MATLAB、Chromium、Evolution 和其他相当无害的东西。然而，最近我遇到了一些麻烦。
该文件的/home/MYUSERNAME/.cache/upstart/dbus.log大小变得非常大（超过 12 GB！），然后我的系统就彻底崩溃了，因为我正在处理一个很小的分区，因为我把所有文件都存储在另一个磁盘上，所以它会完全填满磁盘，然后系统当然会变得没有响应。此外，该upstart过程占用了一个核心的 100% CPU，所以我笨重的联想 W520 也会很快过热。
什么可能导致此行为？我该如何解决它？
我在日志文件上运行了head一个：tailHead
myusername@myusername:~/.cache/upstart$ head dbus.log
(process:2372): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '20' is invalid for instance '0x1a43550'
(ubuntu-geoip-provider:2409): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '29' is invalid for instance '0x2007620'
(process:2547): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '47' is invalid for instance '0x1b0f370'
(ubuntu-geoip-provider:2409): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '29' is invalid for instance '0x2007620'
(process:2372): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '20' is invalid for instance '0x1a43550'
Tail：
myusername@myusername:~/.cache/upstart$ tail dbus.log
(process:8147): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '47' is invalid for instance '0x1b52790'
(process:7836): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '20' is invalid for instance '0x1ae2dd0'
(process:7836): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '20' is invalid for instance '0x1ae2dd0'
(process:8147): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '47' is invalid for instance '0x1b52790'
(ubuntu-geoip-provider:7859): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '29' is invalid for instance '0x2429e40'
(process:7836): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '20' is invalid for instance '0x1ae2dd0'
(process:7836): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '20' is invalid for instance '0x1ae2dd0'
(process:8147): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '47' is invalid for instance '0x1b52790'
(ubuntu-geoip-provider:7859): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '29' is invalid for instance '0x2429e40'