syncml over http with Nokia 6070 does not work

[direx]

I've tried to sync my Nokia 6070 using the syncml-http-server and the file plugin (also tried kdepim-plugin). I've set up my 6070 correctly and it connects to my local machine. When I start a Server server-sync on my phone nothing really happens:

daniel@frodo ~ $ msynctool --sync Nokia2file
Synchronizing group "Nokia2file"
The previous synchronization was unclean. Slow-syncing
Member 2 of type file-sync just connected
received event dsession
received contact dsession
Member 1 of type syncml-http-server just connected
All clients connected or error
Member 2 of type file-sync just sent all changes

After a while the cellphone just aborts the sync process. I've tried to mess with some settins in syncml-http-server.conf but it did not change anything. Using wireshark I found out the the Nokia 6070 actually connects to my PC and tries to sync. I have attached the wireshark log (the "WAP Binary XML"-part looks pretty interesting) and the syncml-http-server.conf.