Hello everyone.
Please give me an advice if you know anything about Leopard and FFIL!

I just got new iMac at my office and installed OS 10.5.1.
Till yesterday, I was using FFIL formatted font suitcase on my lovely old PPC iMac, with OS 10.4.11.
But it seems that my new Leopard OS dosen’t recognize FFIL file as a font but a “Unix execute file”. Even Font Book and Linotype FontExplorer can’t open the ex-FFIL files, which are about 50% of the fonts I have!

I think this might be an problem of my computer, but since I’m the only one who works on Leopard in my office, so I decide to ask people here for an advice.
Does anyone know what’s going on with my new working equipment?
Please please help me!