Had to change from Cyberpatrol to n2h2 (due to cost)

Never previously had any problems.
Byt now I gat aclcheck abending the server withing 30 min of restart.
Any ideas?

BM 3.7 SP2 on NW 6 SP3 with all patches

aclcheck
Version 3.70z Monday, January 20, 2003
Copyright (C) 1991-2003 Novell, Inc. All Rights Reserved
Novell ACL Check NLM PXY36_5

proxy
Version 3.71p Monday, March 31, 2003
Copyright (C) 1996-2003 Novell, Inc. All Rights Reserved
Novell Internet Proxy Server NLM PXY36_13

Thanks

seb