slinger and No-Caching

I am running Slinger with the -c command.

I am browsing the .shtml files locally with Voyager and across a network
using IE 5.0.

When I put the tags into the .shtml files to prevent caching, IE continues
to display the wrong data from the data server (I am using the simple oven
example).

Any time I change the .shtml file, IE immediately reloads it after a
REFRESH timeout.

It seems that slinger may not be giving the correct last-modified-date for
the served page.

Could this be true, or can anyone direct me at how to force IE not to cache?

Thanks