The weekend saw a flurry of activity in my micro-blogosphere as everybody started building their presence in Orkut. Was it too much too fast?
The Orkut website now states:
We’ve taken offline as we implement some improvements and upgrades suggested by users. Since orkut is in the very early stages of development, it’s likely to be up and down quite a bit during the coming months. None of the information you’ve entered will be deleted, and none of the connections you’ve made will be lost. And, if all goes well, you should see some significant improvements when we come back online.
We’ll send an email once everything is ready and running again. Thanks for your feedback and for bearing with us as we work our way up the learning curve.
The orkut team

Or was it to counter security holes as pointed at by Heiko Hebig?