Figure I'll put this in here me as well as many other have been having problems with spells and abilitys on the action bar displaying incorrect recast times and then telling you it can't be used yet. I have noticed that the longer the game is left running the more noticeable and messed up they become.. For example I launch ff and my slow recast is at 1:05 after 4 days of not completely logging out(char select screen doesn't reset it) my slow recast was down to 0:52. While it was not the correct recast it would display that slow can be used and if you tried clicking on it anytime between when it was *ready* at :52 and when it was really ready at 1:05 it would not work. This also seems to work with the weather as it has taken 6 in game minuets longer for weather to change after 4 days of ff running. My best guess is this problem is related to some of the points outlined by the op. Also feel free to see if this is the case with you guys if your action bar timers start to get out of sync the longer the game is running.