Just last week, I encountered an interesting scenario; two separate customers using two completely different ISA plug-ins hit exactly the same problem, although it manifested differently for each. Cust #1 Scenario: ISA 2004 EE, 4 array members W2K3 SP1, separate CSS, all domain-joined. Problem: When requested, each array member produced a wpad script that only included itself. In no case did the wpad script list any of the other three array members. Cust #2 Scenario: ISA 2004 EE, LARGE multiple-array deployment, separate, multiple CSS, W2K3 SP1, all domain-joined. Problem: CARP requests continuously failed. In both cases, the same relative behavior for each plug-in caused the problem - what was it? All mail to and from this domain is GFI-scanned.