The "Bookmark this page" pop up has the buttons reversed between the Windows and the Linux versions of Firefox. From left to right, in Windows it's "Done" and "Remove Bookmark" and in Linux it's "Remove Bookmark" and "Done". When I get used to the position of the controls in one OS then the other is reversed. It may be a small oversight on the part of the programmers,but it's a big deal in productivity (they must have been trained in Abjad, writing right to left) , and please don't emulate Windows marketing tactics.