ser 0.9.3 has just been released. This is the new ser stable version.
The cvs stable branch is now rel_0_9_0.
The new release can be downloaded from: ftp://ftp.berlios.de/pub/ser/0.9.3 ("official" source code, pre-compiled binaries for various architectures, packages for various operating systems; for more information see ftp://ftp.berlios.de/pub/ser/0.9.3/README).
Before upgrading from an older version, please read ftp://ftp.berlios.de/doc/NEWS (or sip_router/doc/NEWS if you use cvs).
If you use Debian, Jan has setup a ser apt repository. He will send a mail shortly with more details.
Andrei