Jini and Network Computing/Eight fallacies of distributed computing

L. Peter Deutsch asserted:

Essentially everyone, when they first build a distributed application, makes the following eight assumptions. All prove to be false in the long run and all cause big trouble and painful learning experiences.
 * The network is reliable
 * Latency is zero
 * Bandwidth is infinite
 * The network is secure
 * Topology doesn't change
 * There is one administrator
 * Transport cost is zero
 * The network is homogeneous

This set of fallacies provide a wide range of responses and reactions, as one might imagine.