Transmission's web GUI is not accessible anymore

I have installed a transmission daemon on my home server. I have used to use it through integrated web GUI. After upgrading my server (from Ubuntu 11.04 Natty Narwhal to Ubuntu 11.10 Oneiric Ocelot) the web GUI was not accessible anymore. Only thing I got was this error:

409: Conflict

Your request had an invalid session-id header.

To fix this, follow these steps:

When reading a response, get its X-Transmission-Session-Id header and remember it Add the updated header to your outgoing requests When you get this 409 error message, resend your request with the updated header This requirement has been added to help prevent CSRF attacks.

X-Transmission-Session-Id: CBcYiodnQIHKYkhr9EceZOMW3ICgMSgt6j2FTCOXbcunA1tK

After hours of searching the solution a decided to use transmission from natty repository. So I did:

$ wget http://security.ubuntu.com/ubuntu/pool/main/t/transmission/transmission-common_2.13-0ubuntu8_all.deb

$ wget  http://security.ubuntu.com/ubuntu/pool/universe/t/transmission/transmission-cli_2.13-0ubuntu8_amd64.deb

$ wget http://security.ubuntu.com/ubuntu/pool/universe/t/transmission/transmission-daemon_2.13-0ubuntu8_amd64.deb

$ wget http://security.ubuntu.com/ubuntu/pool/universe/t/transmission/transmission_2.13-0ubuntu8_all.deb

Then install the downloaded files:

$ sudo dpkg -i transmission*.deb

And repair broken dependencies:

$ sudo apt-get install -f

Now the transmission web GUI works again.