I think there is something goofy with Opus' SFTP implementation with newer ssh servers, because I get very slow transfers on LANs or even over the Internet. For instance, I was just sending something to a FreeBSD box over the net, and only getting 20-25k/sec from Opus.
I did a commandline sftp from my Linux server of the same file to the same remote server and was getting about ~85k/sec (this is DSL).
My Opus machine is a 4-core 2Ghz Opteron system, and the Ubuntu box is a jankety old 600mhz P3.
I actually brought this up awhile back: [url]Slow SSH copies to an Ubuntu server?]
Although I am now running Opus 9.1.0.6 on both XP and Vista, behaves the same way on either.[/url]