i'd reported a "call of juarez the cartel" sound echo problem to:
then i'd used my support ticket.
I watched every day my mail box but i missed
the ubisoft request message about adding details on my issue.
So their ubisoft autobot said that if there's no question, there's no problem or the problem is fixed but they did not read any comment in my message.
It seems that the tech help is controlled by a stupid bot, sending stupid messages until you loose any hope to contact the tech help.
I'm really patient but it's a pain in the ***
to get any help from ubisoft.
In fact, there's so many people asking support that ubisoft can't read 1% of them and they prefer to concentrate on their big franchise like Assassin's Creed.
So, i'd stopped playing with coj the cartel because there's too much bugs in it
and no support to figure out there's a lot of things to fix.