roaming profile won’t download from srvr

nt4.0, sp6a, user has roaming profile that won’t download on particular pc. pc is built the same way the rest of the pcs in the office are built. She can log into any of the other machines and her roaming profile downloads from the server. She logs into this particular machine and it won’t download profile, it just creates local profile from default user. Have deleted her profile and tried a couple more times with same result. We even tried logging her into a machine offsite which she has never used, and it downloaded properly. It is just this machine. No one else is having problems with this machine. She is not concurrently logged into another machine when trying to log in to this problem machine.