There seems to be a problem with the nependeath and dark nependeath drop rate. Before i started the Ericssons Reward quest, the drop rate of the nependeath seeds, which is a regular common drop, was just like any other mob. After i started the quest, which asks for 200 nependeath seeds and 100 dark ones, the drop rate has dropped significantly and it takes forever for them to drop a single one, and its extremely frustrating. Thought you might want to check it out
http://royals.ms/forum/threads/nependeath-dark-nependeath-bug.3046/ This is the only known problem with the drop rate.