I try to restore a couple of Workstations at the same time, let's say 20.
The first 4 of them are booting up with pxe and start restoring.

the rest of them are hanging at the ZEN Preboot Policy connect or later at PXE File download.

The Network is pure Gigabit with managed HP ProCurve Switches. Server is OES2 SP2 Linux with ZDM7 SP1 IR4

This worked perfect with ZEN4 and Netware 6.5 n the same LAN Environment.....