Okay..... I have MacBook and a MacBook Pro. The MBP is on the latest Tiger and has been my main system. I run iTunes and sync my iPhone with it. I decided to upgrade the MB to Leopard (yes, I know... please don't say it!) and move stuff to it. The touch pad on the MBP is acting up and I planned to wipe the disk on it, install Leopard, and before I put files back on it send it to Apple for repair. So, for a while the MB was to be my main laptop.
I copied the whole Music folder fromt he MBP to the PB. My library was all there except it didn't show my apps from the iPhone. I am able to sync the iPhone okay, but the apps aren't showing up in iTunes. They are on the phone, just not in the iTunes. They ARE in the iTunes folder in their Mobile Applications folder. Weird. How do it get them to show in iTunes?