Hi, I use RedHat Linux since I were working on Fermilab/E871 at long time ago. Now I'm still using RH9 and Fedora. This is the first time I try SL ... the distribution is similar with FC4/3 except OpenAFS which is new to me. A simple question, after I installed SL4.2, at the firstboot stage ... the OpenAFS configuration asking me to choose a cell, what does that meant ? I'm not working on Fermilab any more ... in fact, I'm working on IC test industry now. I believe I should not choose the cell "fnal.gov" or others ... so I just ignore the OpenAFS configuration, but what happen if I choose "fnal.gov" ? After I tested SL4.2 ... if we think it's OK for our applications, a lot of employees in my company will also install SL4.2. I want to know if they choose "fnal.gov" for OpenAFS's cell ... will that cause any trouble to Fermilab ? we really don't want that happen ... Please help to explain what does cell "fnal.gov" mean ... is that option just for Fermilab's internal PC only ? Thanks KC