I'm on FF4 Beta 12 and tried setting up Firefox Sync for the first time today. I specified an email address and password, but the install seems to have never completed. I can't get into synch in my primary desktop PC where I started the process, can't access the account in my laptop which I want to synch to the primary PC. In trying to start all over again, I attempted to delete the registered user ID and password, but I didn't get a clean response from the Firefox Sync website. Now when I try creating a new account, in entering an email address I get "invalid email" and/or "unknown error" on both the desktop and the laptop, even if I use a new email address. Is there a way to start all over again with Firefox Sync? Some cache perhaps on my desktop that needs clearing out? Thanks. msilvers50@gmail.com