Do you use the Compiz Desktop Cube plugin? I don't use it so I didn't notice this but it seems you can't enable the Desktop Cube in Ubuntu 11.04 if you use Unity - a bug about this has been submitted but it was marked as "opinion" so it doesn't look like it's going to be fixed, at least not in Ubuntu 11.04:

Starting with Ubuntu 10.04, Skype is available to install in Ubuntu via the official Ubuntu partner repository. However, this repository is not available if you upgrade to a new Ubuntu version that's still in alpha/beta/rc.

Elementary GTK theme version 2.1 was released today, bringing support for GTK3. Other changes include: dropped Aurora engine, the panel is now dark by default and bug fixes as well as a new Xfwm4 theme.

A lot of people are experiencing red/pink tint on YouTube videos starting yesterday. The cause seems to be a combination of Flash 10.2, a recent YouTube change and the users graphics cards and seems to be browser-independent (can occur in Firefox 3.x, Firefox 4 beta as well as Chrome / Chromium). Here are some solutions which will hopefully fix the red YouTube videos bug.

As you probably know, Linux Mint 11 "Katya", the next Linux Mint version that will be based on Ubuntu 11.04 Natty Narwhal will not use Unity by default. Well, as it turns out, Linux Mint 11 will move even further from Ubuntu and will ship with GNOME 3.0 by default, even though Ubuntu 11.04 will use Gnome 2.32.x.

Christian Giordano has announced that Unity will get overlay scrollbars. This means the scrollbars will not be visible until you move your mouse over the side where the scrollbar used to be.

Fitts is a new Metacity theme created by albyrock87 (Alberto) who's also behind the cool new Avant Window Navigator Lucido style and also a Synapse developer. The theme is based on a mockup by rAX and is designed to use big buttons so they are easy to click.

With a slight delay (of almost one day), Unity was updated to version 3.6.0 in Ubuntu 11.04. This update doesn't bring major changes but it fixes a lot of bugs making Unity a lot more stable. You can check out the full Unity 3.6.0 changelog, HERE.

An update to the Ubuntu 11.04 installer (Ubiquity) finally brings upgrade support to the Ubuntu Live CD. That means that for instance if you use Ubuntu 10.10, when you'll boot the Ubuntu 11.04 Live CD you'll have an option to upgrade (without losing your documents and installed applications). Besides this change, there's also a redesigned partitioner:

G'MIC (GREYC's Magic Image Converter) is a tool that comes with a lot (more then 190) of pre-defined image filters and effects for GIMP and is available for Window, Linux and Mac OSX.

A new Compiz-based Unity version (3.4.6) was uploaded to the Ubuntu 11.04 repositories minutes ago, getting one of the features you've just seen in the Unity 2D video we've posted earlier: when pressing and holding the Super key, a number is displayed for each application in the Unity launcher and pressing that number will launch / raise that app.

A lot of people want a close button for the Ubuntu notifications but unfortunately this won't happen - they don't want NotifyOSD to be customizable. But you can get notifications that have a close button by using the AWN Notifications Daemon.

Unity 2D (Qt) is finally getting closer in design to the regular Unity. Check out this video recorded by by om26er:

Gnome Shell 2.91.90 was released yesterday getting some final adjustments according to the release announcement:

A quick update: LibreOffice 3.3.1 has just been released, bringing new colored icons and eliminates various problems to improve stability. For instructions on installing LibreOffice from the PPA, see our post on LibreOffice Ubuntu PPA

Synapse, the cool new semantic launcher for Linux written in Vala and powered by Zeitgeist reached version 0.2.4 codename "Anandamide". This version brings new plugins: calculator, Launchpad plugin (find bugs and branches on Launchpad), Pastebin, Imgur (upload images) and a selection plugin (allows you to execute actions on currently selected text).

Touchpad Indicator was created with a very simple feature in mind: to allow you to easily enable / disable your laptop or netbook touchpad with a click but it slowly started gaining some other cool features.

Launchpad-Getkeys is a script (comes packaged in a .deb) that automatically imports all missing GPG keys, even if you're behind a firewall.

How do you know when you have a missing GPG key? Here's an example: when you run "sudo apt-get update", you'll see some errors like this:

[...]

Fetched 47.0kB in 6s (7,710B/s)

Reading package lists... Done