Have too much stuff in your HTC HD2? Internal storage space is running low? Here is a Windows Mobile application that will help you ~ ClearTemp. As the name applied, it will help to clean the temporary files such as big Google Maps temp file. I tested on HTC HD2 and it is working well. Not too sure does it supports other Windows Mobile phones or not. Give it a try yourself.
GPU-Z ~ a free utility designed to give you all information about your video card and GPU. It provides displays adapter, GPU and display information. It also provides displays overclock, default clocks and 3D clocks. I use it to trace my ATI HD 4870 GPU temp and fan speed. It has log to file function. Therefore, you can trace these during game play.