There are some programs / files that need root access to use them. Sometimes there is only an alert that you don't have the rights to execute / delete / save this program / file.

I am german, so if I install Ubuntu I install the german version. Almost everything is translated, but not the search engine plugin in firefox (upper right corner). For most of those search engines (Ebay, Wikipedia, Amazon) exists a german version that I have to add with http://mycroft.mozdev.org/ or by going on this website.

I have often to write chemical formulas, e.g.:

NH_4 Cl + H_2 O "<->" HCl + OH^"-" + NH_4 ^"+"

this arrow ("<->") should be like in this wiki-article:
Gleichgewichtspfeil

It would be extremly useful to implement this, because rightarrow or dlrarrow are not the same

edit: I don't want to replace any arrow. I want to add this arrow - and its not the same as the arrow for resonance (I'm sorry, couldn't find it in the english wiki):
"Dies wird durch den Mesomeriepfeil (Resonanzpfeil) ↔ symbolisiert, der nicht mit dem ein chemisches Gleichgewicht symbolisierenden Doppelpfeil \;\leftrightharpoons\; verwechselt werden darf." http://de.wikipedia.org/wiki/Mesomerie

means: the arrow for resonance may not be mixed up with the arrow for chemical equilibrium

You chat with someone and you and your chat-partner use different programms. Most of the time, if you use a smilie your partner can't see what you ment

The last few days I wanted to create PDF-Files of my website. So I copied the Website (ctrl + c) and pasted it (ctrl + v) in OpenOffice. Well, the text and the picture were imported but not something like borders, background-colors, colors in general ... it would be nice if OpenOffice would copy also the information which is stored in the CSS-File.

In this screenshot you can see what I mean by talking about horizontal scrollbars in Totem.

I vist / search a lots of websites in the internet. As Firfox developed the new "Awesomebar" I've been very happy because it was easier to find sites I've already visited. But the more sites I visit (and search in google) the less useful is the awesomebar and deleting something from the history is quite time consuming

Do you know Foxmarks? Its an easy way to synchronise bookmarks and to save them. With foxmarks I don't have to worry about having saved all my bookmarks before I reinstall Ubuntu because they are not only local on my pc but also on a server.

I would like to have the same for my packages. It would be great if I could just create an account and automatically save the packet names I have installed (e.g. apache2, php5, vlc - just the names, not more). So if I would re-install ubuntu, I would just access my account and ubuntu would install the packages I had before.

This feature could also be connected with the popularity contest - so people would take an advantage of this contest and you would get better results.

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Answers to the Comments:
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Why don't make a shell-script like $ sudo apt-get install apache php vlc?
1. comfort: Especial for newbies' it's much easier if they don't have to code anything
2. no disadvantages: You should not have to use this if you have doubts where this information
goes to (just like you don't have to use the popularity contest) and I think this would not influence
the performance.
3. so why not?
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Why don't use this procedure?
On the source machine:
$ dpkg --get-selections > /some/file/called/my-packages.txt

On the fresh destination machine:
$ dpkg --set-selections > /wherever/you/put/my-packages.txt
$ apt-get dselect-upgrade


[....]

Today I searched some files on my external hdd with ~ 300 GB of data. This took quite some time. After the results came, I wanted to view one folder. So I opened this folder and wanted to go back to the searchresults after I looked in this folder. The problem was that nautilus began again to search for the files again.

If I watch a movie I set the volume very high. Sometimes I forget to set the volume back to a normal value before shutting down. When I start the computer again, the starting sound is much too loud.