If you are like me, you might be slightly annoyed by the much slower scrolling in the main menu on the PR1.2 firmware. Well fortunately there's now an unofficial hildon-desktop update that addresses the issue.
Read more about it here.
This is how to do it:
You'll need to have rootsh installed first.
Download this file to the N900.
In the terminal:
$ sudo gainroot
# dpkg -i /home/user/MyDocs/hildon-desktop_kinetic_2.2.138-1+0m5_armel.deb
That's it. Reboot the N900 & it's done. The kinetic scrolling is now about the same speed as before the firmware update. Also as a bonus, the little UI twitching glitch in the phone app has also been solved on this update.