HTC have released a ROM update for the HD2 that has been plagued by a few problems.
ROM Upgrade for HTC HD2
An updated ROM is now available for HTC HD2 users to download. As always, HTC is committed to providing customers with the best possible mobile experience.
Norway:1.66.409.1, Spain :1.66.412.1, Denmark:1.66.403.1, France :1.66.406.1,
Sweden:1.66.413.2, Italy:1.66.408.1, WWE:1.66.405.2
Keeping in touch has always been very important, and this update delivers fast and reliable SMS messaging.
Before you proceed, please confirm that this software upgrade is a newer version than what is currently installed on your device. If it is the same version and your device is operating normally, there is no need to reinstall the software.
You can download the ROM update HERE.