Voice is broken?

Okay. Voice has always been spotty for me. I thought I fixed it the other day, forwarding every single port I could think of through my router, and my firewall (though I often also shut the firewall off). It was working for days and days and days.

Now suddenly today, it doesn't work. People can hear me, but I can't hear them. Was there any kind of update that may have changed the ports that SLVoice.exe uses?

EDIT: It should be worth noting that the little voice symbol on the Local Chat tab in the Communications window is yellow now, no longer green.