Informix CLI & active server pages.

Hi, I developed an application with active server pages on NT4 Server SP3 & IIS4 to extract information from Informix SE & Online databases running on AIX box's and display it as web content. I'm using Informix CLI V7.23.tc2 as the go between but now after a short period of time (i.e.. up to 1 day)the application fails with: Microsoft OLE DB Provider for ODBC Drivers error '80004005' [INTERSOLV][ODBC Informix driver][Informix]Client is not known to database server. This is weird, does the database server just decide thats it not going to trust my NT4 server after no fixed length of time? Does Informix SE do something to a client if more than one request comes from the same client at a time? Previously I was plagued with -406 errors running on IIS3 but informix suggested the upgrade of Informix CLI from a lesser V2.50.td2 which seems to have cured the -406 problems. Does anyone develop successful ASP apps with the CLI software? I'm starting to loose faith with informix now, I seem to be spending all of my time tracking down more & more bugs! If anyone can shed any light on any of my problems I would be most grateful. Thanks in advance, Matt.