I finally got the KDE v2 updated on my N800 without any error, but I found the following problems (maybe not the problem, but the setting that I don't know how to do):
1) Network connection works but the dialog always displays "connecting" instead of "connected". It makes you think it's still in the processing of connecting". I was waiting to see "connected" to show up only found out it's been connected already.
2) The virtual Keyboard is not around handy. You have to bring it up yourself by selecting utilities/vkyboard. I don't know how I can make it stayed on the desktop so that next time I file up KDE again I don't have to do it again(like I said before, I have to learn a lot about the KDE on N800 although I have been using it for a long time on SUSE 10.3). That's not the problem. The problem is the number keys don't show up. It only shows a small rectangle for each number key. On the extended side, I click on the NUM button, it shows the number keys but disappears right away (numbers on the keypad).
3) The red ball next to the cursor is a little too big, IMHO, when you try to select an item from the pull-down menu, it's in your way of reading text. Also I have to get used to the blinking red light. I assume that's an indication where the cursor is. I wonder if I can set it blinking when I need.
4) The google/ youtube video is not working. I guess I have to learn how to make it working.

I love the KDE on N800. There's much to learn. I have lots of catch-up to do. Things like bluetooth mouse, vnc, default setting-up, printing, etc.

jllchao