I'm having a problem with a Sonicwall TZ100 where any computers running OS X (Leopard or Tiger) cannot get to either yahoo.com or news.yahoo.com (sometimes one site works but not the other and it's different for each computer). Every other site works fine except yahoo.com. Windows computers work fine. If I replace the Sonicwall with a Linksys router they work. I have taken the Sonicwall to my office and had the same problem. I have tried updating the firmware and restoring to the factory defaults. It also doesn't matter what browser I use (i.e. Safari, Firefox, etc). The problem has been happening for about a month. Content filtering and all Sonicwall security services are disabled. It's not a DNS issue since the affected computers can resolve and ping yahoo.com with no problems. The problem definitely seems to be with the Sonicwall. Anyone have any ideas?