turbos core dumping everywhere

Hi all, We've just moved from 16 bit only apps to 16 bit and 32 bit apps on clients. However, the turbos from the 32 bit connections are dumping very regularly. This is a large concern for us. Informix Engine: 5.06 running on Dynix/PTX 16 bit turbos - 5.01 32 bit turbos - 9.20 (these are the ones causing dumps) Clients are a mixture of NT/Win95/win3.x Apps are mixture of 16 and 32 bit. The ones causing problems are likely to be VB5 apps using ADO2.0, connecting to Informx via Intersolv's 3.11 32 bit Informix driver. Has anyone seen this before? I have to say that the CLI-SDK rather underwhelmed me at the time - any ideas if this is lack of compatability with the driver to engine, CLI to engine????? or what? Anyway, any help much appreciated. Thanks, John