Wendersnaven.com (a resource for nwn2 builders)

See the full list of patches for download at the vault:
http://nwvault.ign.com/View.php?view=NWN2Other.Detail&id=19

Shock Wolf has a good post about how to deal with the risk of updating here:
http://nwn2forums.bioware.com/forums/viewtopic.html?topic=669984&forum=109