Yes. You can use the 'nice' command to lower the priority of a process.
Yes - in the process of installing Ubuntu. If you want to format and nothing else, take a look at GParted (google).
Ubuntu uses the Linux kernel, which uses 1:1 process model, from wikipedia: "Threads created by the user are in 1-1 correspondence with schedulable entities in the kernel. This is the simplest possible threading implementation." It's possible that supercomputer flavors of Linux support other threading models, but since this question was about ubuntu I answer so.
Xubuntu and Ubuntu are two different versions of Ubuntu. (Ubuntu has GNOME.)
To update from 9.04 to 10.04, you can either use the update manager or burn a cd. Since 12.04 LTS is out though, I would burn a cd and install that.
There is no easy way to "switch" from one operating system to another. The easiest thing is to install Windows 7 over the Ubuntu installation if you do not want Ubuntu anymore. Back up any data you have first before you do this because otherwise it will be lost in the install process.
Ubuntu is best, but then I'm biased, as my computers all run Ubuntu!
Ubuntu is better in the management manner. visit here for more info. techinfozone.net
Ubuntu was originated in South Africa in 2004, founded by Mark Shuttleworth, you can read more about ubuntu @
Ubuntu is a free, supported debian/linux implementation of Unix. As such, you can do nearly anything that you can do in Unix in Ubuntu.
No. After download and burn the Ubuntu 10.10 install disk, you can either TRY Ubuntu without affecting your Windows at all, or INSTALL Ubuntu to have them both in your PC. However, to install Ubuntu, you need to be careful. Make sure not to install Ubuntu to the Windows drive. That is all.
PowerPC version of Ubuntu.