This version started out able to run but after applying some security updates to my laptop, it does nothing but crash. Sometimes it displays a list of machines, other times it crashes right upon launch. The crash is always the result of it trying to access memory outside of its address space. On the other hand, Timbuktu has been a solid performer since 1986 and works across both high speed and lower speed lines. I was not impressed when this product was called Apple Network Assistant on Mac OS 9 and I am less impressed on Mac OS X now.