Just received my Ubuntu Karmic Koala's CD this morning. I'm excited to use it. It took couple weeks to reach me because the customs delaying it(i saw the the package was released on 10th Nov but i received today - 21st Nov). Oh well, as long as i got it.. hehe..
I have read some good/bad reviews about Karmic Koala, but i don't have any problems installing it. The installation was smooth, all the drivers was detected and working perfectly. I'm lucky, i guess. I like the new icons and boot animation. But the default wallpaper was ugly
I bet some of the old packages/tweaks that i used in Jaunty is not compatible with Karmic. I'm going to try it tonight.
I don't like Empathy because it doesn't support plugins and Facebook, i've to download and install Pidgin after this.
The Software Center is a little bit unfriendly, because i didn't see any ratings for each applications. I always search for the ratings because its easy and i don't remember most of the applications name.. *sigh*
Overall, Karmic Koala is fast and more stable compared to Jaunty(i have issues with ATI driver installation through Driver Manager).
I'm going to dig some more of the tweaks in the internet and Pimpin my Ubuntu.