Sorry. I am a user like you. I am on and off the Genealogy.com every day, many times. The ONLY time I had to log in, was yesterday, 1/1/11.
I don't know what Genealogy.com does or doesn't to. However, I have been attempting to help other users on these GenForums for 10 years. I can't tell you how many times, multiple accounts at Genealogy.com have occurred in the same manner that George explained.
As for you having to log in three times to access your account, I don't know why that is happening to you. I am sorry that it IS happening.
I can further say, that in the past, when other users have had this problem, some background utility has been cleaning up Browser Cookies that has caused this type of problem. I am NOT saying that is what is happening to you, I am only sharing my experience on Genealogy.com and these GenForums.
You can believe me or not AND I am trying to help YOU.
I would further suggest that you use the Help Menu and contact Genealogy.com Directly, about this issue. You and I can not resolve it.