I find it very annoying when I update my Ubuntu box, only to find that after the update I need to reboot. I suggest a solution similar to Apple's software update*, where the update has the reboot icon located next to it to signify that a reboot will be needed or a reboot icon on the panel, similar to the way the new red down arrow in hardy signifies an important update.

*Image for reference: http://i92.photobucket.com/albums/l25/CATSCEO/update.png

In Nautilus I can choose Single Click, but this only a feature of Nautilus.
In the GNOME dialogs Open file, Save file, etc, I must do two clicks!
(In Windows the Single Click is for all system).

According to my tests Xubuntu is now slower than Ubuntu. In the newest version(gutsy and hardy) Gnome has reached the lightness of Xfce and it's now even faster. In the addition it's very hard to do things with Xubuntu.

No one should use Xubuntu anymore. It's old, it's not good. Xubuntu should be removed from the official Ubuntu variations as obsoleted.

If apps crash in linux most users have no idea where to look for the task manager.

On Windows pressing either Ctrl+Alt+Del or Ctrl/Shift/Esc brings up the Task Manager.

How about wii have a faster ubuntu like windows xp,
XP operates very faster in comparation with ubuntu linux
but if ubuntu will be faster and more compatibel with more files like vidoes,arhives,images and more ubuntu will be
how to say a wow system because that little things.
And a more compatibele hardware + a faster system is the things a pc needs

Few times in my life there was need to turn off the computer without the picture (monitor is off).

Many Linux distributions give a simple way to do it — by the power button on the system unit. But Ubuntu doesn't turn off the computer with this button. It just displays the dialog I can't see (no picture).

So the idea is to just turn off the computer with this button. :)

Otherwise we need to do Ctrl + Alt + F1, log in as root and type "shutdown now" (not that easy, especially if we need to turn off the computer urgently).

Today most of the computers are providing 2GB of RAM or more. When I'm looking at the memory consumption of ubuntu it is about 400MB.

I think that Ubuntu should look at the RAM capacity of the computer and take the full advantage of the hudge amount of memory that we have today.

I'm sure it will be possible to preload most usefull apps and to bring a more efficient, smooth and fast system.

Make a guest account that people can login to, and check mail, surf web.

Every time the guest account logs out, its purged so next user who login is a clean fresh account.

Mac OS X has this;
* http://www.apple.com/macosx/features/300.html#system

I dont wanna know if I have a debian/kde/gnome (whatever the difference is) before I try to install an application.

I'd like to have applications be installed as easily as double-clicking on a setup.exe in Windows.

In Ubuntu/Linux i have to open a terminal, put some abracadabra, cross my fingers, and hope that it install correctly! A regular user wont like that.

Archives are opening in applications like File Roller. Why? When you thing about you realize that archive is nothing less than special type of folder (and folder is special type of file with defined structure dependent on filesystem). But archives can be presented as compressed folders and opens in same windows as regular folders. Why do we need to confuse user with different windows?

Working with archives will be easy as in Midnight Commander or in Total Commander or in Windows XP. And if it will be implemented like VFS (zip://path/archive.zip/subdirectory/file) or as kernel driver it will be easier due to be transparent to any application.

Update: If gvfs is not possible, mounting the archive could be another possible way to implement this.

Archive managers should be used only for creating archives with non common attributes, e.g. encrypted, splitted to multiple volumes (to fit DVD, CD, ZIP drive, Floppy)...

Note: When you try to drag big file out from the archive from File Roller you need to wait to fully uncompress file before releasing mouse button (once it started to uncompress it). It's bad and very annoying.

(Idea copied from: http://chabada.sk/better-desktop/)