I have a couple compilation albums so I checked the compilation box so they'd group together. Problem is that only 3 of the 7 or so compilations have actually grouped together in the compilations tab and remain separate in the library. I tried restarting iTunes but that did zip. As far as I can tell, there is nothing in the songs' information that would cause this. It's quite frustrating, just like everything else to do with the ever temperamental and convoluted iTunes. I wish you guys would just let us use a different music program. I don't mean to rant, but this isn't the first issue I've had and I'm sure it won't be the last.