...you may no longer have a working card. If you upgraded to Apple's 10.4.10, you may have noticed that your card no longer connects. This happened to me last week. I'm told Apple has created a WWAN update, but I've also heard that it doesn't fix the problem. Anyway, if you want to know how to fix it, go here. Just follow the directions. Trust me: they work.
By the way, if you don't have an HSPDA card, I'd strongly encourage you to get one. Well, only if you travel a lot. … Read more