When I upload an image, there is created small 150x150 thumb, I disabled medium and large thumbs, cause I don't need them, but there are also generated some images in random sizes named "{original name}-{some random numbers}-rect.jpg). I don't need them, so what are they and how to hack WP to stop making them? Thanks :)
As far as I'm aware, they're not being created by WP itself but they may be an artifact from a poor GD Library install.
I'm on shared (godaddy) hosting. Is it possible?
At a guess i'd say a plugin, any image/gallery/upload related plugins installed?
Lightbox 2, Scissors for v2.9, User Photo
These are somehow related to images.