simple scene freezes the whole pool

[rendernerd7]

Hi,
has anyone had this one: A simple scene overloads all of the clients. Tha whole client pool freeze completely? They can only switched off by pulling the plug :/
message is something like : memory low
But it is just a simple scene with some particle animiations :puzzled:
Anyone any ideas?
the scene is distributed by a chunk size of 5 frames
any suggestiones?
thnaks
nik