Respawning time

Since the last server reset, half an hour ago, outland's (and I guess whole world) respawning time has been dramatically increased.
This is a major issue for those who need to quest or farm in a server with 6-9k players.
Has this change been made on purpose, is it a temporal decision, or is it just a random problem related with the latest fixes?
Thank you in advance for your thoughts.

Is the respawn time increase affecting mobs, mineral nodes, or both? I'm close to Outland and your post was a bit unclear.

As far as I've been able to test, it affects normal monsters. Their respawn time has been reverted to normal, which means several minutes for a couple mobs with low drop percentage.