I am using Win XP and DW CS4 and CS3. I downloaded the Security assist and reloaded it but I don't remember if I uninstalled it first. I'll do an uninstall and then reinstall it and see what happens.
I have only used it for this site so I don't know if it is site specific or not. I'll try it on my site to see what happens (www.lenoxweb.net).