images too big on blogpages since update to 3.15.2

Heya,

since I updated today to the new version of decode, all my images on the site are different… on the Blog they appear far too big, on the pages they just changed position as far as I can see.

have a look: http://dein-buntes-leben.de/buntes-blog/

I can´t find an option to change the appearance of the images in the blog. Is there any?

They are always 2000xXXXX px big, so facebook does show them correctly.
On my site they did appear in a reasonable size until today, tho.

What can I do? Is it a fault in your update, and I am just the first noticing? Or is there a box I didnt check or sth like that…?