Orkut is severely hit with a ‘Bom Sobado’ virus (Bom Sabado! means Good Saturday in Portuguese!) and if you are receiving any messsage from your Orkut friend (containing the word ‘Bom Sobado’), do not visit the person’s profile.
The script once activated on your profile will automatically update your status message as well as send message to all your contacts. And if you are hit by the spam, change your Google account password right away.

• Do not visit any profile on Orkut till this script is blocked ( Do not use Orkut till this is blocked, as you can get affected by Flash scraps posted on your Scrap book too! )
• Clear your cookies and cache right away and change your password and security question.

And if you are still on Orkut, maybe it’s time to scrap Orkut and look for a better alternative, i.e. Facebook!