Im running the latest release version (5.0.372.127) of chrome on karmic koala x86. I just installed Google Voice and Video chrome plugin with out problems but if I try to start a video call then I get this message (in the chat window).
Video is not supported on this OS. Learn more...
The learn more... is static text i.e. no link so thats not much use. A quick google shows that ubuntu does support this feature, theres even a thread here.
Sorry if Iv'e omitted any crucial information, let me know and Ill update the question ASAP.