There was a fast server restart and maintenance tonight to fix the following:
Dungeon monsters pathing and aggro - it should be back to normal now. Let me know if you have any issues.
Dynamic Range - this has been adjusted again - it's set to an average distance on normal maps and higher in Catacombs. Dungeons remain the same (high).
Fix for Hydrangea Rod.
Removed the level 50 PvP weapons from the world drop list.
Fixes for Windows 8 random disconnections and crashes (already patched in a couple of days ago).