Anyone else experiencing problems with their voicemail? Ever since upgrading to OS3 I quit getting notices that I had voicemail. I didn't realize this until someone told me they left a message and nothing was showing up. After spending approx. 2.5 hours on the phone with AT&T, I'm being told that it is a known issue system wide and that they don't know how to fix it yet!?!? Said they have known about it for about a month. I no longer have "visual voicemail" at all. When I go to my voicemail screen it immediately dials my number and I go into my voice mail menu (like it did with the old phones). I still get no notification that I have any voicemails. I just have to call in to it a few times a day to see if there are any messages. Phone is a 2nd gen 3g , 16gb, non-jailbroke, with AT&T contract. A couple of the AT&T reps I've spoken with have tried to put the blame on Apple. I'm guessing its a network problem and not an Apple problem. Anyone else with this problem?