The Feb 26, 2013 release notes state:
“- Eased the restrictions on global leash time.”
If that means the mobs will chase you for double the time/distance (that is my observation), then this is a very annoying change.
There are many places where mob density will not allow you to stop and recover any more because they chase you for a longer distance and you reach the next mob in the meantime. Many times I’m not interested in stopping to fight, just passing through. This should be a valid option. If you happen to cross a group which can disable you and damage you enough to burn your heal, you have to stop somewhere further to recover before meeting the next mob.
Please consider returning it to what it was before. If this was done to solve a particular problem, then that particular problem should be solved, not by changing a global variable which affects the whole game.