WoW + Mac = Latency?

[Pikabuddy]

Hi. I have been having really bad latency issues with WoW, and Blizzard posters don't help much. I'm having on/off latency issues, reaching up to 5000 ms. I have tried:
-Flushing the DNS.
-Deleting WoW temp flies (Cache etc.)
-Decreasing MTU(572 at one point).
-Moving WoW folder to a different user (admin).
-Power cycled modem/router
- Bought a new modem.
- Updated mac hardware (software update)
- Firewall configuring
I use a Linksys router to connect to the internet. 2 macs on the same internet can play RuneScape simultaneously without issue( latency persists even when I'm the only one on). The router/modem is only shared with my home.

Mac version 10.5.8 Leopard

Please help!

 

[miles01110]

It'd help if you posted what kind of Mac you're on, but if "Blizzard posters all say the same thing" it sounds like a Blizzard problem.