If serial port redirection is activated (. tl-serial-redir.sh) recording through tlsnd no longer works. Apparently, the "set format" ioctl returns EINVAL. Probably, cyclades-serial-client overloads the ioctl() call even for /dev/dsp.
While we are at it, it might be a good idea to remove some legacy junk from cyclades-serial-client, such as support for HP-UX, SCO, Unixware, and AIX.
tlsnd is removed on Bug #5597.