Dreamweaver FTP is slow because it scans the hard drive before puching files to the web site.
I was able to take my large site update from 35 seconds to less that 6 seconds by moving my site development folders to a SSD (Solid State Drive) drive.
DW does not seem to do the scan everytime so there is some sort of head nod to an existing open "connection" but it times out in about 5 minutes. If Adobe opened up the time out to say 30 minutes most complaints would go away.
roman
November 2010