> So HTTrack has been mirroring for 8hrs overnight and
> I just found out I can't access most pages offline.
> When I click links inside those pages I'm being
> redirected to all different pages who say "Session
> Timed Out, ...". All these pages are called

This is a server-side session timeout, there is not much you can do.

> I did set max con. to 1 per sec. so the server
> wouldn't be overloaded (asp pages) plus it's a large
> website.

If the site is really huge, you may shorten the mirror scope, and possibly try
to see if you do not get caught in a loop inside the site (some sites may
contain loops, such as URLs containing random identifiers that will produce an
infinite number of pages)

Unfortunately, very large site + slow speed (which is mandatory for heavy CMS)
+ short session timeout is not a trivial thing to solve :(