安装某些软件时出现此错误：
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
5 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up gconf2 (3.2.0-0ubuntu1) ...
I/O warning : failed to load external entity "/usr/share/gconf/schemas/compiz-wobbly.schemas"
Failed to open `/usr/share/gconf/schemas/compiz-wobbly.schemas': No such file or directory
I/O warning : failed to load external entity "/usr/share/gconf/schemas/gwd.schemas"
Failed to open `/usr/share/gconf/schemas/gwd.schemas': No such …