[OT] Strange IE5.5 Caching Behavior

[Ignacio Vazquez-Abrams]

On Mon, 10 Sep 2001, Steve Holden wrote:

> Sorry about this post being off-topic, but c.l.py is the largest collection
> of web-heads I have easy access to. If you know nothing about HTTP, please
> ignore this.
>
> I'm serving static content, looking at the client's "If-Modified-Since"
> header, and returning a 304 response if the file's Last-Modified date is
> before that. When I serve the content I include a "Last-Modified:" header to
> identify the age of the file.
>
> For some reason the incoming "If-Modified-Since" headers *always* seem to be
> three minutes and 27 seconds before the "Last-Modified:" date of the file.
> I've searched Google, and Microsoft's Knowledge Base, without finding
> anything relevant.
>
> If anyone knows what's causing this (and even better, how to fix it) I'd be
> very grateful for a pointer.
>
> regards
>  Steve

What is the clock skew between the client and server?

-- 
Ignacio Vazquez-Abrams  <ignacio at openservices.net>