HTC has released hotfixes for both the Tilt 2 and the Pure. These are only for people who are using the stock ROM and the benefit of this is that it does not require a hard reset (so your data is untouched – it’s just like installing any other app). HTC notes the fixes as follows:
Hotfix: Inconsistent Caller ID function on the HTC PURE. | 12.17.2009
This Hotfix when installed prevents inconsistent behavior of the Caller ID function on the device
Hotfix: HTC PURE Freezes in SMS application. | 12.17.2009
This Hotfix when installed prevents the device from becoming sluggish and/or freezing in the SMS application on the device
The Tilt 2 downloads are available here and the Pure downloads are available here. This does not impact Touch Pro 2 or Diamond 2 owners on other carriers.