优盘在Fedora Core下的默认编码是ascii，因此如果优盘中有中文文件的话就会造成死机，卸载优盘也会显示busy。解决方法是手动添加一个下面的配置文件。如果你的系统编码是utf8那么把下面的iocharset=cp936替换成utf8。

/usr/share/hal/fdi/95userpolicy/storage-policy.fdi

<?xml version="1.0" encoding="ISO-8859-1"?> <!-- -*- SGML -*- -->

<deviceinfo version="0.2">
<device>
<match key="@block.storage_device:storage.removable" bool="true">
<merge key="volume.policy.mount_option.fmask=111" type="bool">true</merge>
<merge key="volume.policy.mount_option.dmask=0" type="bool">true</merge>
<merge key="volume.policy.mount_option.users" type="bool">true</merge>
<merge key="volume.policy.mount_option.iocharset=cp936" type="bool">true</merge>
</match>
<match key="@block.storage_device:storage.hotpluggable" bool="true">
<merge key="volume.policy.mount_option.fmask=111" type="bool">true</merge>
<merge key="volume.policy.mount_option.dmask=0" type="bool">true</merge>
<merge key="volume.policy.mount_option.users" type="bool">true</merge>
<merge key="volume.policy.mount_option.iocharset=cp936" type="bool">true</merge>
</match>
</device>
</deviceinfo>

保存后运行service haldaemon restart重启服务