aptitude为啥有时候不把依赖项标记为自动安装？

socket9999

不知道大家有没有遇到过。
比方说我安装inkscape这个包：

aptitude inkscape

aptitude的log是这样的：

Aptitude 0.6.3: log report
Tue, Apr 12 2011 17:31:16 +0800

IMPORTANT: this log only lists intended actions; actions which fail due to
dpkg problems may not be completed.

Will install 15 packages, and remove 0 packages.
106 MB of disk space will be used
===============================================================================
[INSTALL, DEPENDENCIES] libcairomm-1.0-1
[INSTALL, DEPENDENCIES] libglibmm-2.4-1c2a
[INSTALL, DEPENDENCIES] libgnomevfs2-0
[INSTALL, DEPENDENCIES] libgsl0ldbl
[INSTALL, DEPENDENCIES] libgtkmm-2.4-1c2a
[INSTALL, DEPENDENCIES] libgtkspell0
[INSTALL, DEPENDENCIES] libpangomm-1.4-1
[INSTALL, DEPENDENCIES] libperl5.10
[INSTALL, DEPENDENCIES] libwmf-bin
[INSTALL, DEPENDENCIES] perlmagick
[INSTALL] gnome-mime-data
[INSTALL] inkscape
[INSTALL] libavahi-glib1
[INSTALL] libgnomevfs2-common
[INSTALL] libgnomevfs2-extra
===============================================================================

Log complete.

其中gnome-mime-data libavahi-glib1 libgnomevfs2-common libgnomevfs2-extra作为依赖项被安装了，但是并没有标记为自动安装。我卸掉inkscape后这几个包也不会被自动删除。