Cannot aggro

Do you have GM on? This will cause that

No GM is not enabled, I dont have touch anything GM related.

But when seeking this issue, I found lot of people saying that, so I have tried to verify that GM didnt be enabled by a bug/anyting else.

And it seems not enabled (according to mangos> gm ingame)

So:

- do you have a prodecure to verify I am not GM

- does GM could be enabled only for a specfific "zone" (if not my problem is not begin GM)

I just tested this again, and I am unable to reproduce this issue with murlocs. 

If your account level allows, try and use .npc info
Please provide an entry for one of the NPCs causing an issue.

To make sure gm is not on, log into your character and type .gm off
No GM should not turn on/off over different zones.
 

does something is needed to run thoses commands ? because my character just said what I type. I have tried adding / or replacing . by / unsuccessfully.

Note that murloc are not the only monsters affected, goretusk, defias... all monsters on the southwest.

Additionnaly on the output of mangosd I have:

creature 90292 stopped attacking player 149
player 149 stopped attacking creature 90292
creature 90292 stopped attacking player 149
creature 90292 stopped attacking player 149
creature 90292 stopped attacking player 149

Sounds like your account does not allow that command.   If I understand, this is your server? Is it local (game and server are run on the same machine) or is it connected remotly (game and server are on two different machines.)? What OS are you using?

I have checked this over a few times now and am unable to reproduce this. I know you have said that you are using the current version of Mangos, but if you could please try this once again.. with a fresh clone of the server : mangostwo server 
 

I cant reproduce this and have tested a few times over with the aid of others. Please use the  Peer to Peer Technical Support section if the issue continues.