This is an unofficial data update to the GathererDB addon compiled from wowhead on 2/21/2011, the actual GathererDB team is allowed to incorporate this file into any future post. (and when it is i have no further need to try to host it)
The data may include some nodes (especially treasure chest types) that gatherer itself does not know how to handle, but these are rare. It also was forced to ignore zones gatherer doesnt support such as most dungeons eg. wailing caverns
To install, Unzip the DB_WowheadData.lua file into your World of Warcraft\Interface\Addons\GathererDB_Wowhead folder, reload your ui if wow is already open, and re import the data. (it supposedly wipes out the old import data)
you may need to increase the number of nodes displayed on the minimap, there are a LOT of them in some zones.