[linux-audio-user] lost recording capability of my soundcard

I don't know what happened. Less than a month ago, I could record, now I can't. Playback works, and I can hear the input through the speakers. It just doesn't get recorded. I think the problem started after a debian sarge update of KDE. I've played with every button in KMix, but nothing resolves the problem. I can't record from any imput source, no matter which I select in KMix. Can someone please point me in the right direction? It's a dual-boot system. I can bring up Windows, and record fine, so there's nothing wrong with the card. I'm using 2.6.10 kernel with ALSA, and it's a SB Live! card. And, as I said, everything was working fine a short while ago, so some setting must have changed somewhere. The weird thing (and maybe a key clue to you all) is that playback works fine.