Style fails intermittently

[Alex Worrell]

Hi

I have written an ISAPI DLL that dynamically returns web pages. The head of
the we page contains a style sheet reference in the following format:
<link rel="stylesheet" href="http://1.2.3.4/styles/mystyle.css"
type="text/css" />

I have also tried it using the following format:
<link rel="stylesheet" href="/styles/essex.css" type="text/css" />

In both cases the styles always work perfectly on my development computer,
but on several test computers it sometimes works and sometimes doesn't.
When it does not work the page just appears in default format without any
style being applied.

I have looked in the logs for IIS, and in the cases where the stylesheet
does
not get applied, it is not appearing in the list of resources returned to
the client.

Can anyone give any reason why a style should sometimes be applied and
sometimes not. I have looked at everything I can think of but cannot come
up with any reason for this.

The computers being used are Win2k running IIS 5 and IE5.5

Thanks
Alex Worrell