information in an area big area has disappears ??

Hello, Yesterday I discovered that the streets in a large area had disappeared. I checked the history of changes and it seems that nobody had changed it. I also noted that in other areas other streets had disappeared. http://www.openstreetmap.org/?lat=40.33597&lon=-3.83912&zoom=16 at that position the difference can be detected choosing between the” general “view and the “mapQuest open “ view . May it be a problem of the application?, Is my mistake? Could anyone tell me if there is a way to solve it without rebuilding it at all?