I also did a talk about libssh2 at FSCONS 2009 (in addition to the Rockbox talk) and the slides from it are now available to browse or download.
Libssh2 at FSCONS 2009
View more presentations from FSCONS 2009.
The talk was recorded on video, and I’ll make sure to let you know as soon as it is available online somewhere. That might take a while.