抓包发现的诡异问题，为啥http请求返回数据的同时还返回404错误？？？？？？？？
昨天抓取http://acid3.acidtests.org网站的包是发现了一个诡异的问题，服务器返回了数据（即support-a.png）,但是返回状态确是404，这是为神马呢？百思不得其解，哪位大虾能帮忙解惑啊？
GET /support-a.png HTTP/1.1

Host: acid3.acidtests.org

Connection: keep-alive


User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.202 Safari/535.1

Accept: */*

Referer: http://acid3.acidtests.org/

Accept-Encoding: gzip,deflate,sdch

Accept-Language: zh-CN,zh;q=0.8

Accept-Charset: GBK,utf-8;q=0.7,*;q=0.3




HTTP/1.1 404 Not Found

Date: Mon, 17 Oct 2011 14:12:22 GMT

Server: Apache

Last-Modified: Thu, 01 Jun 2006 06:09:43 GMT

ETag: "8141755-908-41523839d37c0"

Accept-Ranges: bytes

Vary: Accept-Encoding,User-Agent

Content-Encoding: gzip

X-Pingback: http://tracking.damowmow.com/

Content-Language: en-GB-x-Hixie

Content-Length: 2214

Keep-Alive: timeout=2, max=99

Connection: Keep-Alive

Content-Type: image/png


........... ....PNG

.
...
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------解决方案--------------------
这个很纠结啊，是用的什么抓包？
你先确定返回的数据是否正确
------解决方案--------------------
对方网站的后台写错了吧