Paul, we use a NLB cluster at Axosoft too and the way we got around this issue is by installing PureChat as its own web site (non-clustered) and using an iFrame on the main clustered web site to show the ''Chat with Us'' button. It's very easy to do and allows you to run PureChat independently from your main web application, which is great in case ...

We have a NLB cluster of IIS5 servers.  Is it possible to install/configure PureChat so an operator can see chat requests across servers?   The only way I can think to do this is to install PureChat on a third server and direct the imbedded tags to point to the third server, but want to know if that's practical before I spend too ...