Informix Client/Server with 2 SCO 486's: Does it work?

We recently upgraded a client from 1 to 2 SCO EISA '486-33s, which run flat-out with Informix 2.10.03. We split the database up into a client-server configuration, and threw plenty of juice at the problem, with Mylex Caching controllers, 32 Megs memory each on Mylex 486 EISA Motherboards and 32 ports through 32-bit Specialix, plus more logins via a Novell ethernet gateway. But the system falls over all the time! We have isolated the problem to the 32-bit Ethernet cards. We had Racal Interlan ES3210's, which gave "TCP: checksum" errors on the console at times of heavy network load, and the network performance would deteriorate sharply. Then we put in Mylex LNE 32-bit ethernet cards, but things are even worse - the machines have panicked 4 times in 3 days. (Stop Press: 5 panics) So now its back to one machine with an ES3210. Is there anybody out there who has a similar setup to this, with Informix client/server over 2 EISA 486 machines, and that really works and is rock- solid. Or alternatively, can anybody recommend some 100% reliable 16 or 32 bit ethernet cards that are known to work in this sort of situation. They must be completely reliable when being pushed flat-out by the hardware underneath them as well as by the application. Thanks for your help P.S. Please watch the cross-posting. --------- David Mason Aztec Information Systems david@aim1.uucp