Hi,
I'm having a "slight" problem

I was setting up a load of new user accounts and groups when suddenly the browser returned the following message :
Authorization Required
This server could not verify that you are authorized to access the document requested. Either you supplied the wrong credentials (e.g., bad password), or your browser doesn't understand how to supply the credentials required.
I can log in both as root and admin on the e-smith box itself, but every time I try to access it via a web-browser I get the above message. The machine has been working fine for the last couple of days (since I set it up) and this appeared "out of the blue". Any suggestions as to where I should start looking or as to what may be the problem?
Richard