I use Windows Live as my main calendar and contact source. Installed the Hotmail App on my phone to sync the calendar and contacts. This works, but unfortunately only in one direction, namely from the cloud to the phone. I can live with the fact that the contact changes are not pushed back, but the calendar not doing this is annoying. I tried the same with a Google calender, but this has the same problem. Updates are not pushed to the cloud. Any ideas?