Two user accounts after Migration from old Mac

Question

Yesterday I bought a new iMac with OSX Lion. I used the Setup assistant to move my data from my old iMac (Leopard) using Firewire target disk mode.
When that was finished, I was suprised not to see any of my old stuff on my new Mac, so I started copying some stuff manually. It was only later that my penny dropped (Lion noobie here) and I realised I now have two user accounts: my new "Lion" account, and another one which - tada - does contain all my old stuff. Both appear to be admin accounts.
Since I already manually copied all the stuff I wanted to keep to my new account, can I safely delete the old account? How do I do this, and what happens with the old stuff? I read something about the home folder of the deleted user being moved somewhere. Where would that be?
Thanks!

Answer 1

It is easy to delete an account but you wisely used the word "safely".  When I migrated to Lion I did an "in place" upgrade and no new adminstrative accounts were created.   Lion will create a guest acount but that can be easily disabled in the Users and Groups preference pane.  Did you do an in place or a clean install of Lion?  
First, before you delete anything be absolutely sure that the account you want to keep has everything you need.  I suggest you work with it a least a week before making that judgement.  There is no hurry if you have the space to keep two accounts.  I have a spare adminstrative account just in case I need it for troubleshooting.  Be sure you backed up your boot drive with a versioned (like Time Machine) and a cloned backup to an external drive.  
Go to System Preferences and choose the Users and Groups preference pane.  There you will find your accounts and their designations (i.e. adminstrator, guest, standard).   If you are completely satisfied that the admin account you backed up is all you need then you can click on the lock at the bottom left of that pane, enter your adminstrative password, choose the account you want to delete and click the minus button.  Once you have done this, it is gone.  All of the settings and data you had will be gone unless they were duplicated in another account.  Your applications should remain.  
That said, there is nothing wrong with having two adminstrator accounts.  Some very security minded people suggest that you should not operate from your admin account because it allows access to deep levels in your computer.  
Jay