MBP 2009 crashes using World of Warcraft

Question

Dear all,
my Apple Care (3-year) expired just a couple of months ago and so I decided to upgrade my RAM memory on my MacBook PRO, 2.67 GHz Intel Core 2 Duo, mid-2009.
It originally shipped with 4GB (2x2) DDR3 SODIMM 1067 MHz which, as I opened, noticed being labeled "Hynix - KOREA".
As that frequency was not anymore available at the retailer I purchased 2x4GB of Kingston DDR3 SODIMM 1333 MHz CL9.
The installation went perfectly and the system reacted very smoothly, also recognizing them as 1333 MHz ones.
All the applications - I had at the time OS X 10.7.5 - ran perfectly and with much more swiftness as intended but ... one didn't want to collaborate: World of Warcraft. I am using my Mac for work so the functioning of that software is not vital for me, but I would like to investigate anyway.
In the first 60 mins of play the computer freezed once completely and then just WoW blocked, obliging me to a Forced Quit.
Then, two days ago, I decided, due to my now 8GB of RAM, to upgrade to Mountain Lion. The process went on perfectly and the system responded great, but now, WoW caused the system to reboot continuously. If I do not use WoW everything seems to be fine, but I would like to know if there is some connection between the following points:
1) WoW and Mountain Lion
2) the RAM I installed and WoW on Mac
3) the upgrade to ML on a 3-year-old machine.
Here is what I have already done to try to fix:
1) disk and permission repair.
2) reinstall WoW from scratch and run it in both 32 and 64-bit mode,
3) run WoW with no addon at all.
All with the same result.
As far as I know, Hynix RAM is the same mounted on low-end notebooks and it is not at all worthy 200€ / 4GB.
Is this a "special version" of that? Is there something wrong with my Kingston (which, on macupgrades.co.uk was given as fine?)
There is also a thread here in the support that made me see that Kingston was fine also with another frequency.
I repeat myself, the machine runs perfectly ... just WoW has this annoying problem.
I am also waiting for an answer from battle.net assistance, but if anybody of you has some tips I would be incredible thankful to all of you.
Also I am kind of skilled with the OS so I could easily reinstall everything from scratch (i.e. Leopard, then SL, then directly ML) and try again to fix it, but I would really like to know before the source of the problem before doing something so long.
Thanks to all
Sincerely
Michele Galvagno

Answer 1

Hi, Mbuddy800, and welcome to the Community,
In addition to reviewing this FAQ article,
https://support.skype.com/en/faq/FA34447/what-should-i-do-if-i-see-abusive-behavior-on-skype
If you have not already done so, please advise World of Warcraft's site and/or game admins/moderators of these incidents so they can take action against these people.  With thanks to my gamer kid, he recommends filing a support ticket here:
https://us.battle.net/support/en/help/
Regards,
Elaine
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