I’m having a similar problem. I upgraded iTunes to 7.7.1 (11). Here’s a debug level 9 of the Firefly/mt-daap service (I can access the website fine from the same machine):
Thread 112: Entering ws_dispatcher (Connection from 192.168.0.3)
Thread 112: got request
Request: GET daap://192.168.0.2:3689/server-info HTTP/1.1
Thread 112: Read: Accept: */*
Thread 112: Adding header *Accept=*/**
Added *Accept=*/**
Thread 112: Read: User-Agent: iTunes/7.7.1 (Macintosh; N; Intel)
Thread 112: Adding header *User-Agent=iTunes/7.7.1 (Macintosh; N; Intel)*
Added *User-Agent=iTunes/7.7.1 (Macintosh; N; Intel)*
Thread 112: Read: Client-DAAP-Version: 3.6
Thread 112: Adding header *Client-DAAP-Version=3.6*
Added *Client-DAAP-Version=3.6*
Thread 112: Read: Client-DAAP-Access-Index: 2
Thread 112: Adding header *Client-DAAP-Access-Index=2*
Added *Client-DAAP-Access-Index=2*
Thread 112: Read: Accept-Encoding: gzip
Thread 112: Adding header *Accept-Encoding=gzip*
Added *Accept-Encoding=gzip*
Thread 112: Read:
Thread 112: Headers parsed!
Checking to see if connection matches close
Nope!
Thread 112: Connection type HTTP/1.1
: Connection: persist
Thread 112: Original URI: daap://192.168.0.2:3689/server-info
Thread 112: Translated URI: /server-info
Thread 112: Preparing to find handler
Checking /server-info against handler for /
Thread 112: URI Match!
Thread 112: Time is 1218364069 seconds after epoch
Thread 112: Setting time header
Added *Date=Sun, 10 Aug 2008 10:27:49 GMT*
Added *Connection=keep-alive*
Added *Server=mt-daapd/svn-1586*
Added *Content-Type=text/html*
Added *Content-Language=en_us*
Thread 112: Using non-default handler
in main_auth
Dispatching auth for /server-info to config auth
Checking if pw required for /server-info as admin
Yep
Added *WWW-Authenticate=Basic realm=”webserver”*
Thread 112: Entering ws_returnerror (401: Unauthorized)
Updating Connection from keep-alive to keep-alive
Added *Content-Length=2*
Emitting reponse header Content-Length: 2
Emitting reponse header WWW-Authenticate: Basic realm=”webserver”
Emitting reponse header Content-Language: en_us
Emitting reponse header Content-Type: text/html
Emitting reponse header Server: mt-daapd/svn-1586
Emitting reponse header Connection: keep-alive
Emitting reponse header Date: Sun, 10 Aug 2008 10:27:49 GMT
Thread 112: Terminating
Thread 112: Freeing request headers
Thread 112: Freeing response headers
Thread 112: Freeing request vars
Thread 112: could not read: Success
Thread 112: Terminating
Thread 112: Freeing request headers
Thread 112: Freeing response headers
Thread 112: Freeing request vars
Thread 112: Closing fd
With thread 112 exiting, 0 are still running