My system hangs every time when I select the 'input text' function in Photoshop CS3 (Traditional Chinese). I am not sure whether it is related to the Dynafont I have installed in my system, but no such problem was experienced when I formerly used CS2 version. How can I solve this problem?

My system:
Windows XP SP2 (Traditional Chinese)
Pentium 4 2.26GHz
768M DDR Ram
Adobe Indesign CS3 v.10.0.1(Traditional Chinese)