NTFS partition - have to access as root
I've not thought about this before but...
I'm running Ubuntu 7.10 and whenever (in Nautilus, if that is any relevance) I mount & access my NTFS partition, which has Windows XP on it plus some files I use in both operating systems, I have to enter my password at first mounting, and all files on that partition are owned by Root.
Does this mean all the while I am working on my C:\ drive (sda1), I am doing it as Root? Do I need to be root, typically, to access an NTFS formatted drive, or is it to do with the way the permissions are set up on my PC? They are the default, since I have not changed them in any way.
My fstab does not mention the NTFS partition as it is not mounted at boot.
I just wondered if I'm putting myself at a security risk all the while I am working on the NTFS partition, and whether there was a way round it.