when trying to PXE boot on our network certain boxes in certain ip
subnets come up with continuous Heap :Dispose Fail messages and then they
fail to get the linux files and then just hang, other Pcs boot fine into
the PXE environment, the PCs are the same in both subnets so it seems to
be a comms issue, does anyone know how to solve this ?

PS all pc's get their IP via DHCP without problems its just some fail to
PXE boot wqith these errors and some dont :S

PPS this isnt related to any particular version of zenworks as i got it
with 6.5, 6.5sp1 and now 6.5sp2 hp3