There is a spacing issue that I can't find the CSS properties to fix. I notice the same issue is on this UBB forum, so perhaps it's not a property, but a fixed thing.

For example, if I click on "details" of the "Who's Online" content island, there are three main content sections (Registered, Guests, Search Spiders). The spacing between each of these sections is a good 20px or more. I've searched through every CSS property but I can't find anything remotely like it.

Can anyone help with this?

Thanks.

I'm not sure but there are double line breaks between tables in online.tpl

Yeh, some options in online.tpl are kinda dirty, likely it'd be in there you'll want to update (by dirty i'm pointing towards the extra break in the search engine table)