Sometimes we want to have 2 or more desktops ,sometimes we want to remove 1 or more desktops,right?I have just removed kde4 from Ubuntu.By the way,I summarized some tips for installing/removing desktops in Ubuntu as follow:~

Normally, once you have sussccessfully installed NVDIA displayer driver,then you should see the NVIDIA logo when booting the computer. If you don't like it,you can cancel this logo.

I upgraded my Ubuntu 7.04 to 7.10 Test 5 just now,but I found my main partition lost almost 1G space.The reason is that upgrade system will not delete your old kernels automatically while upgrading Ubuntu. The old kernels take much space of partition and normally we seldom use those order kernels again,let's delete them in save way for freeing more space.