我运行的是 Ubuntu 10.10。起初，Nautilus 中的图标变小了，缩放功能也不起作用。然后当我再次启动时，它只打开一个窗口，并且在“视图”中失去了选择。为了说明我的意思，下面是屏幕截图：
上次我安装了 PHP-GTK 和所有需要的各种库，并且运行良好，但是下次打开计算机时，我看到了鹦鹉螺行为，并且面板中出现了我很久以前删除的蓝牙图标。
当我这样做时，sudo nautilus它打开得很好，除了图标仍然比以前小。它打开时显示以下消息：
Initializing nautilus-image-converter extension
Initializing nautilus-gdu extension
** (nautilus:8100): WARNING **: Failed to get the current CK session: GDBus.Error:org.freedesktop.ConsoleKit.Manager.GeneralError: Unable to lookup session information for process '8100'
(nautilus:8100): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.
(nautilus:8100): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
(nautilus:8100): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
(nautilus:8100): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
(nautilus:8100): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
(nautilus:8100): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
(nautilus:8100): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
(nautilus:8100): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.
我怎样才能回到旧的鹦鹉螺？