I installed the Firefox Plug-in for Identity Safe Vault yesterday. I did have to perform a refresh in Firefox. Once the refresh was completed I reloaded the Plugin and it worked very slowly at first. Apparently it performed a sync with my vault and it took a while to do it. It was extremely slow. However, once that was completed it has worked flawlessly.
My only complaint is that if you close out of Firefox and then reopen it, you must re-sign in to the Vault again. If you just minimize Firefox then the vault stays signed in. I'm sure this was done intentionally for security reasons.
I'm very satisfied with the new Plug-in. CUDOS!!!