Here's a little project of the chat window I'm using right now. When you scroll up, it loads 10 more lines. In scratchbox you'll see it's nice, but in the N900 you'll see it sucks. https://gitorious.org/chatareatest If you can modify that and it scrolls smooth and nice in your N900, I'll take a look at it. I'm definitely not wasting any more time in the chat window.