Update: Rift 1.10 Hotfix 4

GENERAL

 * The World Event should no longer randomly disappear from the quest tracker.
 * Conquest: Fixed a case where players on the defeated team were able to respawn or teleport into Conquest after the match had ended.
 * Gloamwood: Removed the four Solemn Brothers as targets for the Gloamwood Advanced Adventurer achievement.
 * Gloamwood: Moved the location of the Instant Adventure, 'Solemn Family', so it will work more reliably.
 * Fixed a rare case where players could execute multiple auto attacks in a short time.
 * Added some tracking to help hunt down the cause of ability lag that people have been reporting.
 * Yay, client stability fixes!

Source

 * http://forums.riftgame.com/official-rift-news/patch-notes/333637-1-10-hotfix-4-8-00am-pdt-9-26-12-na-1-00am-gmt-2-00am-bst-27-9-12-eu.html