Per patch 1.100 (12.15.09):
* Golestandt: This monster has been increased in difficulty, will now have a chance to spawn more frequently and has been moved back inside his lair with adjustments made to address pathing issues while inside the lair. Additionally, Golestandt’s corpse will now decay within a half hour in order to allow players to forcibly spawn him once every half hour if Gerrik’s Sword is used.
* Adolescent dragons have been increased in difficulty.
Per the 1.101 Release Notes 02.24.10:
Golestandt: The damage values of this monster have been reduced. The main breath weapon attack now gives an immunity timer that protects against further resistance debuffs. The primary special attacks have had their reuse timer increased from 2 minutes to 5 minutes. New mechanics have been put into place to target inattentive players.