This is a Windows problem, to do with Windows profiles: you can be a user "bones" on the local machine and have a profile. You can also be a user "bones" on a domain and have another (quite different and separate) profile.
And just to make it even better, if you login as the domain user and the PC can't get your profile from the server, then it can (probably will) create another locally stored profile (which is not the profile belonging to local user "bones"...... it is probably something like the "bones.my.sin".
Clear now?
If you never want to logon to a domain, you can delete the bones.my.sin profile.
If you always logon to a domain and NEVER to the local PC, you can delete the local profile.
Or you can ignore them and put up with it - just remember to say, when it happens again : "Ah, Microsoft - re-inventing the world its own way!"
Cheers

Ian