At first I thought, I was capable of handwriting around 30 WPM, and I wanted to clarify this, so I created a small Java application (only 14K) to help me in testing my hand writing speed, and I have provided a default text for testing. My best score that I could achieve is shown in the image below, which also describes how to use the application. You can download the application from either of the following urls
http://ifile.it/p40r9e2
http://ifile.it/p40r9e2/HandWriting.rar
The application should run on any OS(windows, Linux, etc..) since it is written in Java, provided that you have jre.
The application calculates the writing speeds with or without the space included, and although you can write your own text, for the comparison to be fair try to use the default text in the application. So, give it a try and tell us how fast can you handwrite. I think you would be surprised how slow you are, and you would really appreciate your typing speed and your keyboard :).