refresh/caching problem

[Davie Ali]

I have setup 2 virtual hosts in websphere application server 5.0. Each virtual host has an application associated with it with their context roots set to \.
Both of these applications can be accesses using their urls e.g. www.test1.co.uk and www.test2.co.uk.
My problem is that sometime I am getting some sort of refresh/caching problem. When I go to www.test1.co.uk I sometimes get the wrong application displayed ???
I am also using IBM HttpServer version 1.3.26.