I've been trying for days to find a solution to a problem that shows up when trying to add a 2nd Gmail account on my Droid X.
After entering the User ID/Password for the 2nd account, the system eventually, and always, comes back with the message "Can't Establish a Reliable Connection to the Server".
In my seaching attempts, I've discovered that this problem is fairly widespread, and has been around for many months, with a variety of phones and carriers, but I've not been able to find any solution, or response from Google acknowledging the problem, or offering a viable solution. The most common "fix" offered is to to a Factory Data Reset, which I consider a non-solution that misses the point entirely, and the variety of other proposed fixes look highly suspect to me. It may solve the probllem for an individual user, for the moment, but it does nothing to get to and resolve the root cause. I'm hoping against hope that the Froyo release will address this one, but I'm not optimistic, and I don't understand how Google has chosen not to offer hope or a real fix.