thx for your fast replies....using ppm is not as easy as you propably think: the module depends on libssh2, so is need to install that first (or is it possible that libssh2 is already included in the ppm package?)
My very first thought was to contact libssh2 support, but the only thing i found was a read-only mailing list (lol)
But ok, I think its my last chance to contact their support (if i found it), give a few log-files and hope for help...