Here is debug output showing the problem:
<div><br></div><div><div>2010/11/28 21:22:37 [debug] 10417#0: accept on [2a02:40:40:7::7]:80, ready: 0</div><div>2010/11/28 21:22:37 [debug] 10417#0: posix_memalign: 0000000001031DA0:256 @16</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 accept: 2001:0:5ef5:79fd:3472:2f12:921f:6666 fd:3</div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 event timer add: 3: 60000:1290979417739</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 epoll add event: fd:3 op:1 ev:80000001</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 posix_memalign: 0000000001063DD0:256 @16</div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 malloc: 000000000103FB90:1288</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 malloc: 00000000010400A0:1024</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 posix_memalign: 00000000010404B0:4096 @16</div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 http process request line</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 recv: fd:3 644 of 1024</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 http request line: "GET / HTTP/1.1"</div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 http uri: "/"</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 http args: ""</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 http exten: ""</div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 http process request header line</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 http header: "Accept: application/x-ms-application, image/jpeg, application/xaml+xml, image/gif, image/pjpeg, application/x-ms-xbap, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*"</div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 http header: "Accept-Language: en-GB"</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 http header: "User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; .NET CLR 1.1.4322; OfficeLiveConnector.1.5; OfficeLivePatch.1.3; .NET4.0C; Creative AutoUpdate v1.40.02)"</div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 http header: "Accept-Encoding: gzip, deflate"</div><div><b><font class="Apple-style-span" color="#FF0000">2010/11/28 21:22:37 [debug] 10417#0: *8 http header: "Host: [2a02:40:40:7::7]"</font></b></div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 http header: "Connection: Keep-Alive"</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 http header done</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 event timer del: 3: 1290979417739</div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 generic phase: 0</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 rewrite phase: 1</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 test location: "/"</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 using configuration "/"</div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 http cl:-1 max:1048576</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 rewrite phase: 3</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 post rewrite phase: 4</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 generic phase: 5</div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 generic phase: 6</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 generic phase: 7</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 access phase: 8</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 access phase: 9</div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 post access phase: 10</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 http init upstream, client timer: 0</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 epoll add event: fd:3 op:3 ev:80000005</div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 posix_memalign: 0000000001036860:4096 @16</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 http script copy: "Host: "</div><div><font class="Apple-style-span" color="#FF0000"><b>2010/11/28 21:22:37 [debug] 10417#0: *8 http script var: "[2a02:40:40:7:"</b></font></div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 http script copy: "</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 http script copy: "X-Real-IP: "</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 http script var: "2001:0:5ef5:79fd:3472:2f12:921f:6666"</div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 http script copy: "</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 http script copy: "X-Forwarded-For: "</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 http script var: "2001:0:5ef5:79fd:3472:2f12:921f:6666"</div>
<div>2010/11/28 21:22:37 [debug] 10417#0: *8 http script copy: "</div><div>2010/11/28 21:22:37 [debug] 10417#0: *8 http script copy: "Connection: close</div></div>