I'd like to use the chat section in GMail to make phone calls. I've downloaded and installed the Google Talk plugin, and it acts like it knows what it's doing. But when I try to make calls, the internal laptop mic doesn't work at all (i.e., no one on the other end can hear me). In the GMail chat settings, I've tried selecting "Default Device" for the microphone, as well as "Internal Audio Analog Stereo." No matter which setting I try, none seem to work.

As I said at the top, this is only a problem in Ubuntu; it works just fine in OSX and Windows (which means that yes, my Google Voice account is properly configured). Here are my tech specs:

• Ubuntu 10.10
• Kernel Linux 2.6.35-24-generic
• Gnome 2.32.0
• Google Chrome 8.0.552.237
• Google Talk Plugin (google-talkplugin) 1.8.0.0-1
• MacBook (2,1) w/ internal microphone

Any help will be greatly appreciated! Thanks!