The funny thing is that I know of some popular websites out there, commercial even, that load in what is probably 3 to 5 seconds and occasionally faster. These sites don't have page generation times so people don't think anything of it. To be quite honest I think anything loading in less than 3 seconds with 20,000+ members and 40,000+ posts is doing fantastic. http://www.myhotboard.com seems to load fairly fast with the amounts above.
The other thing that's a factor is the host. If your on a shared server and it's packed with other accounts then I'm sure times will be slower than being on a dedicated one.
What would be nice is to see a list of sites using IIP that state what they are running on as far as hardware and if it's a dedicated/shared server and give some average generation times.
If I can get around to creating an archival system that moves the older posts out of the w3t_Posts table this will help considerably with the speed issues of larger sites too. (it's on the list) lol
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