IE5 and NT problem – corrupt profile?

I have a user on NT4.0 SP4. She gets java errors on some websites. She can open the same websites when she logs in on another PC. (Both NT, local profiles.) Other people can log in to her PC and access the java sites. If I give her admin rights, shecan visit the java sites w/o problems. I have tried deleting and replacing her profile; have copied a known good profile to the default user profile so as to take that out of the picture. She still cannot access the java sites while others with her same privileges can. It must be some sort of profile corruption, but what??