lighttpd webdav 409 locking problem

2011-07-15 04:48:34: (request.c.304) fd: 14 request-len: 434
PUT /New%20Text%20Document%20(4).txt HTTP/1.1
Connection: Keep-Alive
User-Agent: Microsoft-WebDAV-MiniRedir/6.1.7600
translate: f
Content-Length: 0
Host: user2.go-4.crayonova.com
Authorization: Digest username="user2",realm="s3webdav",nonce="02ffb778a0a3ecfdac362fe66396fabc",uri="/New%20Text%20Document%20(4).txt",cnonce="1bdbee7cd4da0a9421f0702bec8997f7",nc=00000001,response="599baba36bcba3d40093b3b313fe6baa",qop="auth"


2011-07-15 04:48:34: (response.c.128) Response-Header:
HTTP/1.1 201 Created
Content-Length: 0
Date: Fri, 15 Jul 2011 04:48:34 GMT
Server: lighttpd/1.4.28


2011-07-15 04:48:34: (request.c.304) fd: 14 request-len: 297
LOCK /New%20Text%20Document%20(4).txt HTTP/1.1
Cache-Control: no-cache
Connection: Keep-Alive
Pragma: no-cache
Content-Type: text/xml; charset="utf-8"
User-Agent: Microsoft-WebDAV-MiniRedir/6.1.7600
translate: f
Timeout: Second-3600
Content-Length: 196
Host: user2.go-4.crayonova.com


2011-07-15 04:48:34: (response.c.128) Response-Header:
HTTP/1.1 401 Unauthorized
WWW-Authenticate: Digest realm="s3webdav", nonce="31cebc3569a6425363870a23bf51ec78", qop="auth"
Content-Type: text/html
Content-Length: 351
Date: Fri, 15 Jul 2011 04:48:34 GMT
Server: lighttpd/1.4.28


2011-07-15 04:48:34: (request.c.304) fd: 14 request-len: 543
LOCK /New%20Text%20Document%20(4).txt HTTP/1.1
Cache-Control: no-cache
Connection: Keep-Alive
Pragma: no-cache
Content-Type: text/xml; charset="utf-8"
User-Agent: Microsoft-WebDAV-MiniRedir/6.1.7600
translate: f
Timeout: Second-3600
Content-Length: 196
Host: user2.go-4.crayonova.com
Authorization: Digest username="user2",realm="s3webdav",nonce="31cebc3569a6425363870a23bf51ec78",uri="/New%20Text%20Document%20(4).txt",cnonce="c7fad9027ab800c03339e5354f4c7601",nc=00000001,response="fa02ff061c0ec4b726ceae6989d1c3a5",qop="auth"


2011-07-15 04:48:35: (response.c.128) Response-Header:
HTTP/1.1 409 Conflict
Content-Type: text/html
Content-Length: 343
Date: Fri, 15 Jul 2011 04:48:35 GMT
Server: lighttpd/1.4.28