I don't know if it's only on my computer or not.
As my mouse scroll is broken and I can't use it as a roll for rolling down the page, I'm using the scroll button - just press it and slide mouse itself for faster scrolling. I found out, that when that button is enabled in Opera (don't know if it happens in other browsers) and is going a bit on the right and at the time when the pictures of cars in upper right corner in forum changes, it follows that picture and the forum is not centered anymore until that image dissapears.
As my mouse scroll is broken and I can't use it as a roll for rolling down the page, I'm using the scroll button - just press it and slide mouse itself for faster scrolling. I found out, that when that button is enabled in Opera (don't know if it happens in other browsers) and is going a bit on the right and at the time when the pictures of cars in upper right corner in forum changes, it follows that picture and the forum is not centered anymore until that image dissapears.