GENERAL

There are several issues with LibreOffice icons in Ubuntu 12.04:

Some readers of our knowledgebase (we prefer this term over blog), complained about mouse pointer size in Ubuntu 12.04 Precise Pangolin. 

It seems that in some cases the size of the pointer is quite a bit larger than it should be (about twice as large as "normal" size), although the different cursors (editing text, hyperlink hand, etc) has correct size. The size changes to the correct size when the pointer is over some application windows (Netbeans, Firefox), but then changes back once it is moved out of the window.

GNU/Linux is a stable operating system but some applications are not!

It could happen that an application doesn't respond to commands and it can't be closed using common method (a click on the close button or Alt+F4 key combination). 

If you experience similar situation, you can close problematic application by running the following command in terminal:

sudo killall %application-name%

Ubuntu 12.04 is the latest and long term support (LTS) Ubuntu release.

It works really great (although with some issues), and I use it for business purpose as well as on home laptop/netbook. Occasionally, I experience a problem with touchpad on my netbook. Namelly, touchpad stops responding and mouse cursor can't be moved on screen.

I'm not sure what causes the issue with touchpad freezing, but the solution that works in my case is very simple - disable and re-enable touchpad support.

1) Press Fn (function key) + F7 in order to disable frozen touchpad

Ubuntu is based on Debian GNU/Linux distribution, thus it uses Apt package manager.

Default behavior is to keep downloaded software packages on the file system during installation process. During time the packages can use a lot of disk space and we suggest occasionall cache cleaning.

How to clear Apt cache

1) Run file manager (e.g. Nautilus) as root user

2) Navitage to /var/cache/apt/archives

3) Delete all .deb installation package files

Note: Be sure not to delete folder partial and file lock.