answered by Shane Taylor
... is go into your google ACCOUNT settings (not gmail ... "Enable." Apparently, google considers its own product (google talk) to be a ... re-enabled this feature, google talk began working perfectly again.
Google Talk has been recently replaced with ... direct download URL:
google.com/googletalk/googletalk-setup.exe">http://dl.google.com/googletalk/googletalk-setup.exe