One thing I've noticed (and recently had pointed out to me) was that it takes a while for blog posts to show up on the aggregate (main) page.  They show up right away in the proper blog, and in the aggregate (blogs) page, but the main page is taking a long time to update. 

On the one hand, it's not a big deal because it gives me (and you, the blogger) a chance to take another look at my/your work before it hits the main page.

On the other hand, if it's a performance issue, we're in big trouble because it's only going to get worse once this site actually starts getting some traffic.  

I haven't seen any kind of setting in CS that corresponds to a propagation delay and I don't know of anything my host is doing, so I guess I'll pay a visit to the CS and OW forums this weekend and see if I can hunt down an answer. Once I know something, I'll update this post.

UPDATE:  Apparently this is a known issue. It has to do with the timezone of the database server being different than the local timezone in the site settings. Sure enough, my site thinks it's in (EST) even though I set it to (CST). I'll probably have better luck just changing my site to (EST) than getting them to change the time on the DB server. I'll see if this fixes the problem.

UPDATE: So far, no luck on the delay. 

UPDATE: well the posts eventually showed up, and I know it's a TZ related issue. I've changed a few settings here and there, but only time will tell. There's also a 5 minute cache on the main page, which is user configurable, and probably not necessary for a site with (currently) little traffic. That is being totally overshadowed by the time zone issue though, so I'm not going to bother tweaking it until I can get the other delay resolved.