Go on the Sony Ericsson website and download the Update Service- I had the same problem with my Games and Applications- I updated my software at least 15 times and it kept telling me I already had the latest software- I almost gave up hope.... did it a moment ago just for one last go and my phone is completely fixed!!! So don't give up if the software update doesn't work first time!!! x
Lucy Coles, November 2008