我的也是Debian，Chinaunix里qybei告诉我的方法，对我很管用，你试试吧：
我想字体发虚的原因是字体的线条太粗了，如果让它显示得细一点，就会变得很清楚。我通过修改/etc/fonts/fonts.conf来实现细化线条，下面是我在该文件中添加的规则(我从某位大哥的字体美化心得中拷贝过来的)
<!--
This expression is added by Akito Hirai<akito@kde.gr.jp> for convenience.
It can be used to make artificial bold versions in client libraries/applications.
-->
<match target="font">
<test name="weight">
<const>medium</const>
</test>
<test target="pattern" name="weight" compare="more">
<const>medium</const>
</test>
<edit name="weight" mode="assign">
<if>
<more>
<name>spacing</name>
<const>proportional</const>
</more>
<const>demibold</const>
<const>bold</const>
</if>
</edit>
</match>
<match target="font">
<test name="pixelsize" compare="less_eq">
<double>16</double>
</test>
<test name="pixelsize" compare="more_eq">
<double>8</double>
</test>
<edit name="antialias" mode="assign">
<bool>f</bool>
</edit>
</match>
