Ubuntu
Compiz Application Switcher Fix
I was having an issue with with compiz getting the application switcher to show the windows previews. using a [Radeon HD 2600 Series].
The windows were showing up but with a plain white mini window. Now I find it productive to have this plugin enabled as when you are tabbing through it often is quicking and faster to look at the mini color layout to decied if this is the window you are infact looking for.
Before
To fix
Open up compiz settings manager.
go to Application Switcher plugin
Uncheck the MipMap option.
After
Hope this helps some one else out
intrepid pre install
I have not installed the new Ubuntu version for many reasons. Firstly, the current version is a LTS version 8.04.1 and secondly I don’t have the bandwith to download it. 
I have heard some mixed views about this much awaited release (which surprisingly made its release date.) Some of the GUI/GNOME has improved and some of the user interaction has gotten simpler, but others have just plain broken.
As for this release our local mirrors have been inundated over 4000 concurrent sessions. It just shows that the local community is ever growing. (I never knew it was this strong, and this does not include the majority of users which do not have a net connection and which would otherwise be capable of downloading an ISO).
I must say I like the idea of having a 6 month release cycle. The idea is great: always new and ever changing OSs. (Things to re-configure and change/fiddle with.) However I do feel that Ubuntu tries very hard to meet this deadline even when they really should not. They often release stuff prematurely and this worries me a little. This would be one reason why I do not use Ubuntu as a production server platform.
Tomorrow is the release party so I am hoping to get hold of a CD or two — then I might be able to install it…. Might even think about installing Kubuntu, but that is a big IF and maybe.
edit: Thanks to cocooncrash for the English advice