I've also had a problem with my P800 where it just turned off for no reason. When I tried to turn it on all I got was a vibration and nothing further. After four weeks of Sony Ericsson trying to repair it I have been given a replacement phone.

Problem now is that my IMEI number has changed and I have to try to get new registration keys for all my software.

I'm also very annoyed with SE that they seem to be unwilling to offer a firmware upgrade for the P800 to fix obvious bugs and provide the same level of functionality as the P900.

I was considering upgrading to a P900 in the future but think I may return to the reliability of Nokia for my next phone.

The phone is good but support and reliability is terrible...