Apparently Snow Leopard + Illustrator CS4 = CRASH also.
I just wish I realized that before I selected Menlo with out saving my work. Oh well.

No problems with Menlo in my Illy CS4 and SnoLeo configuration.

. . .
Bert Vanderveen BNO

Apparently we also got reports of some issues with the font. Have forwarded the details to Peter Lofting. In the meantime folks can use Vera Mono etc.,

Cheers, Si