The Brazilian Air Force have arrived at the scene where they thought debris was to be found the UFO (unidentified floating object) was only a wooden pallet. No debris has actually been found. However some new theories have emerged.
1) The plane was flying too slowly through the storm. This was mentioned in a French Newspaper, stating that the A330 flew too slowly through the storm and may have stalled. Although this has been played down in the media it could have been a primary cause of the crash.
2) There was icing and this made the plane travel slower, or disrupted the airflow over the wings causing problems with the aircrafts control surfaces. Icing should not appear at those altitudes but for some reason it is presumed that icing may have occurred for flight 447.
3) There are reports of errors and warnings about speed. Did the pilots have incorrect information about the planes speed and this would have caused item #1 above (referring to the speed at which Flight 447 travelled through the storm). Could the aircrafts pitot tubes have been partially blocked, causing incorrect speeds to be displayed as they climbed. The pitot tubes have been involved in some major crashes over the years and cause very unusual cockpit readings as well as very sudden crashes, as seen on Seconds from Disaster and Air Crash Investigation on National Geographic.
Whatever the news over the weekend, it seems very very strange that absolutely no debris has been recovered.
It may be a long time before we find out the cause of the flight 447 crash.