Sorry, I have some basic questions, I'm new to font management. Font Book came with OS X 10.56 and I initially used that. I heard it's not a good program so I installed Linotype Fontexplorer. 1. Is there any issue with using two font management programs at once? Do I need Font Book?, is there anyway to disable it and let Linotype Fontexplorer be the sole program. 2. I have about 500 fonts automatically loaded on to the system, is that too much for a new unibody Macbook with 2 gigs of RAM? 3. If I disable some fonts, would I need to do it in both font management programs? 4. I was messing around with trying to replace the system font, "Helvetica Neue" on the computer, but it didn't work. During the process had I deleted HelveticaNeue.dfont from everywhere on the system. But now I have put it back in the 1) protectedfonts folder & the 2) System->Library->Fonts folder. Everything seems fine, it appears as a protected, active font in both programs & I can use it, that's the only places that need it, right? I'm not screwing anything up am I? 5. In my paranoia, I had also copied it to the User-->Library-->Fonts folder, it then showed up as a double in the font programs, and became a warning. What is the danger of having a font duplicate? Can it screw things up? Thanks for reading.