netware 6.5sp8
AFPTCP.NLM AFPTCP (Build 163 SP)
Version 2.07 November 13, 2008
Code Address: 943CA000h Length: 0003146Dh
Data Address: 943FD000h Length: 000096C0h

attached is abend.log, with first abend yesterday, second abend today. server was not restarted between abends.

I do not know what version the Macs are currently running, but it should not be the latest OS... they should be a couple revs behind, maybe even as up to date as last summer.