Yes, there is. Don't use the all blog for entries. The purpose of the all blog has been explained many times, so just take it from me, don't use it for entries. You should be using blog numbers 2 and up.

blog 1 in b2evo is a special blog.
It agregates all posts from all blogs.
If you don't want tha,
just use blog 2 and blog 3 and don't show blog 1.

Ahhh, right - I've been playing about and now understand what you've both said it makes alot more sence to me :)

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Last question, I have about a year and a half of blog on the main blog, is it possible to move the posts from that blog to another one easily? I notice in the categories area it says 'Note: Moving categories across blogs is disabled.' ... is it possible to reenable it?
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EDIT: Have found the answer in the forum, although have yet to try it :)

EDIT2: All sorted - cheers :)

Cheers :)