> "I would refrain to send any sensitive information over Google Talk right now."
Why only "right now"? Why ever send sensitive information over a 3rd party's server. While I believe that Google will find and fix the problem, they probably make little to no claims about the level of security they offer. So using them at all should be a calculated risk.
The exclusion of third party servers is meaningless. Any communication over the internet will pass through at least several third party routers, which are by all intents and purposes servers.
What you shouldn't do is transmitting sensitive information without controlling the end-to-end encryption chain. If you do that, you can involve as many third party servers as is convenient.
Why only "right now"? Why ever send sensitive information over a 3rd party's server. While I believe that Google will find and fix the problem, they probably make little to no claims about the level of security they offer. So using them at all should be a calculated risk.