Upgrade Samsung Galaxy Tab to Android 2.3.3
In May Samsung begin rolling updates to 2.3.3 for European devices, starting with Italy. 

At this time (June 2011) there is no word of an update to 2.3.3 being available in South America or Netherlands, so you will have to wait some time, or you can go to XDA-Developers forums and follow the instructions to manually update your Galaxy Tab