Whatever I do, I always the horizontal scrollbar; my pc is same that in april, may, june, july... Changes on site are the problem; more precisely problem is column of advertising who exceed of some pixels.

It's not case on summary of the site.

This right column isn't aligned correctly; i see (few pixels) a part of dark bg behind the grey headband if i push horizontal scrollbar at the right. Before the changes, the band took up the entire width. And advertisements were not shifted.