@naturalp: Your site has the index.php page showing evenly sized images/text blocks. Was it luck? I too am using Default theme but find the boxes don't stay the same size if text is not equal.

I'm now rethinking size of my images too. Like your large squares :)

Sorry but I didn't see this post! - any layout was purely accidental! - I do however have aprob with some pages such as http://merrylegsfalabellas.com/spring-falabella-foals/ When I see this page the pic on the left of Donnie Darko drops down to the next row exactly one box below where it shoud be and it leaves a 'blank' area! - not sure if you would see it in the same way - would be interested if you did as when I raised this I was told that no-one else saw it in this way?