Google talk authentication error

Hi,
I had this error before. I couldn't download apps on marketplace as I kept getting that error and I couldn't sign into gtalk due to the error aswell.
I followed the steps in this link here that johnnyboy posted up and this fixed the problem.
Follow the steps below to if you are experiencing issues with downloading apps from the Android market:



1. Open the Market app and press the home button in the upper left corner to return to homepage

2. Go to Settings \ Applications \ Manage \ Running

3. Press "Market"

4. Press "Clear cache" (do not clear data)

5. Press "Force stop"

6. Return to "Settings \ Applications \ Manage \ Running"

7. Press "Google Services Framework"

8. Press "Clear Data"

9. Press "Force Stop"

10. Go back to home screen and press Market app to Start Google Market, it will give an error message

11. Shut off and turn the tablet back on; once back Market should work, if it gives an error it could need another minute to work

12. At this point the Market should work

source: http://www.google.com/support/forum/p/Google%20Mobile/thread?tid=1c6b4e0e15889196&hl=en