I know it's not really the issue of CANNONICAL or ubuntu, but still.
I'm using kubuntu, but i save all of my files in doc, because
odt isn't supported everywhere, i listen music in wma format
(don't really know why not rather in mp3) because no mp3 palyer or anything like that supports ogg format. I have to write my seminar work in times new roman, because my faculty demands that all the documents to be written in this font.
The idea of free software is lost when the society demands that you use non-free formats...

Overall, I was pretty happy with the Gusty to Hardy upgrade process. It was fairly straight-forward. One thing I thought was very confusing was a question prompting what it should do with menu.lst. It then gives options like "Keep the currently installed version" or "Install the package maintainer's version". First, many users will have no idea what menu.lst is or does. Second, even if they do know what it does, the options are not explained correctly (as I understand them) during the upgrade. Since many users have a Windows partition listed in their menu.lst, they want that to be preserved, so they might think they should "keep the current version". However, this means that the new kernel version will not be loaded (see Launchpad link). This question should better explain what will actually happen for each of the options. Many users who chose this incorrectly are currently using the Gutsy kernel, which breaks nVidia graphics drivers on upgrade (see forum post, there are lots). That's no good.

Simply put:
Add RealPlayer for Linux to the multiverse repository, and prompt people (at least those from the USA) to install it when they go to play MP3s, AACs, or RealMedia files.

More Info:
Many people desire out-of-the-box, or seemingly out-of-the-box playback of MP3s, AAC (mpeg4 audio), and (sometimes) RealMedia audio and video files. Currently Ubuntu offers seemingly out-of-the-box support for MP3s by offering to install MP3 codecs that are open source but may violate patent laws in the US.
Suse has an easy solution to this: bundling RealPlayer. It supports the above-mentioned formats. Rather than bundling RealPlayer, Ubuntu should offer to install it from the multiverse. This would require that RealPlayer be added to the multiverse (Helix Player is insufficient because it does not support the proprietary formats.)

NEW BRAINSTORM STYLE RATIONALE:
1) As a hobbyist developer, when I write little programs I want to distribute, it's unecessarily complicated, and takes learning an entire new skill base to create a Deb.

2) Making writing and distributing programs quick and easy is part of creating a good software ecosystem anyway (it saves time and money for a development company to use very quick tools that don't take much to train their workforce to use, making Ubuntu a more attractive platform to develop for)

3) Lots of fixes and workarounds for problems often involved having to install software from source. doing ./configure && make && make install means that software is installed outside of the apt package system, which causes numerous other problems. This is often unavoidable - I would love to only use apt for software installation, but particularly in the case of wifi drivers it's just impossible.

How do we make packaging easier, and make the package management system work with the ways that users have to use their systems already?

RATIONALE PART OF THE TEXT FROM THE OLD STYLE BRAINSTORM:
One of the major things that attracts people to Windows is the support Microsoft give developers - yes they charge extortionate amounts of money - but being able to do everything well, and simply, attracts developers, and helps them perpetuate bug #1.

Sun have made Java ubiquitous by making development a breeze with Java. Packaging is the single most irriating thing of developing for Linux. Particularly as there's lots of different package formats.

I'm bored with dual-screen on GNU/Linux, it really has to have a graphic configuration, and better features.
I would like to move windows from a screen to another, but when I maximize I need it to be in a single screen.

Update: Xrandr GUI blog post by Bryce Harrington

Often after doing an update the double arrow icon will appear indicating a need to reboot. But if you click it, no reason is given as to why reboot is needed.

My idea is that clicking on the icon (or a "Why?" link for more information) should indicate why the OS thinks a reboot is needed so I can make a decision about whether to do it now or later.

my other ideas

A simple "Restart Wireless Services" button would be a nice addition to the NetworkManager Applet.

Sometimes it takes quite a while for the networking services to start after waking from suspend. This would prevent having to go in term to type "/etc/init.d/networking restart" which would be great for new users.

When I go to 'Wine configuration - Desktop integration', there is no simple way to use my current theming of Ubuntu.
I have only options of 'install theme' (it's a windows file? where I can get it?!) or manually set each item color, and each time when I change Ubuntu theming, I must again and again set each item in Wine manually.

I suggest to integrate Ubuntu theming in Wine. It looks not so hard.

I'm the "happy" owner of an ATI Radeon 9200 PRO... Neither Envy nor Restricted Drivers interface can install the proprietary driver on my PC... Why??????

Emerald is so much nicer than the default Appearance Manager. The options in Emerald are simply gorgeous, in comparison. When possible, I think that Emerald should be the DEFAULT theme manager.