I'm having similar issues to the post below.
I've set up a new WP installation and have completed the network configuration.
Purchased the Network template and added to the page I want to aggregate my network blog posts:
This Static page using the blog new template.
I have 2 network blogs here using a different theme.
I've every possible combination of settings in the Network Config panel, and can get nothing to show. I'm sure it's something simple I'm missing.
Thanks in advance for any help.