Apologies for double post. I thought I was editing the first.

Any suggestions before I reinstall??

Are the titles of your blogs different? (otherwise you might as well be looking at the same blog through 2 different URLs)

What are the categories for each blog?

blog1 title 'index', category 'index'.

blog2 title 'About', category 'about'.

Ah. But 'Index' was originally called 'About'. Perhaps there's some residue. I checked the obvious places, but something left in the database - is that possible?

Very weird. No it doesn't sounds "possible" ;)

You might want to check the category ID of your categories (appears in the URL when you edit them) They should definitely be different.

You migth also want to check in the advanced properties fo your blogs if they are set up to aggregate the other blog.

Would you look at that! An asterisk in 'Blogs to aggregate' for blog1. Where indeed all blogs were aggregating.

How astute of me to do that.

Thanks so much for the pointer. Much appreciated.