user asked for password to map drive

When logging on, user gets a network logon screen, asking for id and password to log on to \C$. Help Desk tried connecting to that drive, then disconnecting and have user log out (user has roaming profile). User waited designated amount of time for profile uploading/replicating, and logged back in but still has same problem. User doesn’t even have admin rights so should never have been able to map to an admin share in the first place. User also has profile on PC that her system is asking for a password to map to. Have seen this on more than one roaming profile. Using NT4.0 sp6a.