下载中国知网文献，文献下载后标题乱码

如题，我用的是Ubuntu8，浏览器用的是firefox3.0.1，打开中国知网，选择下载的文件后，下载文件的题目是乱码。下载时没有使用下载软件。
有谁知道怎么解决吗？　　　　　　

Linux中文文件名转码工具 convmv

USAGE: convmv [options] FILE(S)
-f enc     encoding *from* which should be converted
-t enc     encoding *to* which should be converted
-r         recursively go through directories
-i         interactive mode (ask for each action)
--nfc      target files will be normalization form C for UTF-8 (Linux etc.)
--nfd      target files will be normalization form D for UTF-8 (OS X etc.)
--qfrom    be quiet about the "from" of a rename (if it screws up your terminal e.g.)
--qto      be quiet about the "to" of a rename (if it screws up your terminal e.g.)
--exec c   execute command instead of rename (use #1 and #2 and see man page)
--list     list all available encodings
--lowmem   keep memory footprint low (see man page)
--nosmart  ignore if files already seem to be UTF-8 and convert if posible
--notest   actually do rename the files
--replace  will replace files if they are equal
--unescape convert%20ugly%20escape%20sequences
--upper    turn to upper case
--lower    turn to lower case
--help     print this help

命令使用:
shell$>  convmv -f gbk -t utf-8 filename --notest