But, in a fresh Arch Linux install you still need a few gstreamer packages to enable totem-video-thumbnailer to do its job…

1. Install necessary packages (as root):

pacman -Sy --needed totem gstreamer0.10-{{bad,good,ugly,base}{,-plugins},ffmpeg}

2. Delete old video thumbnails to force generation of new ones:

rm -rf ~/.thumbnails/fail

3. Browse a folder of video files in Nautilus:

In some cases you may need to restart Nautlius for the changes to take effect:

killall nautilus

…or simply log out and log in again.

System Info

• Arch Linux – Kernel 2.6.31-ARCH
• Gnome 2.28.0
• packages gnome & gnome-extra

Source

http://wiki.archlinux.org/index.php/Common_codecs

Versions

• Starter is weak (for netbooks) 32-bit only, OEM pre-install only
• Home Basic is for emerging markets (we probably won’t see it in the US much)
• Home Premium is what most consumers will end up with
• Professional is the lowest version to include features such as Remote Desktop Serving, Domain Joining, and Windows XP Mode
• Enterprise is the same as Ultimate but with volume licensing and they both include BitLocker
• Ultimate has all possible features (of course)

Wikipedia detailed Windows 7 Version Comparison Chart

General

• Supposedly 7 can be installed from a USB drive (without hacking).
• Internet Explorer 8 can pretty much be removed – many parts are integrated into the OS, but the browser can go bye-bye.
• The sidebar is gone but Gadgets remain, and are more efficient and movable.
• There is an overly hyped new taskbar.

UPDATE:

I recently tried this method on a similar Acer laptop with Ubuntu 8.10 AMD64 with no results. After searching, I used another guide that makes compiling madwifi from source simple. If my method doesn’t work for you, remove the backports modules:

sudo apt-get remove linux-backports-modules-intrepid-generic

then reboot, and try out the below guide. Thank you Hyperandy.

Link: http://blog.hyperandy.com/2008/11/01/atheros-ar242x-ubuntu-810-ibex/

Hardware:

• Laptop: Acer Aspire 4520
• Wireless Card: Atheros AR242x Communications Inc. 802.11abg

lspci | grep "Atheros"
07:00.0 Ethernet controller: Atheros Communications Inc. AR242x 802.11abg Wireless PCI Express Adapter (rev 01)

Resolution:

sudo apt-get install linux-backports-modules-intrepid-generic

After above install completes, reboot, then open up the Hardware Drivers manager (jockey-gtk or jockey-kde) and disable “Support for Atheros 802.11 wireless LAN cards” and make sure that “Support for 5xxx series of Atheros 802.11 wireless LAN cards” is enabled then reboot. You may need to reboot to see both drivers in the Hardware Drivers manager.

This is at least a temporary fix, you’ll end up with the ath5k drivers- hopefully a stable universal method for Atheros card support will become available soon.

Source:
8.10 Release Notes | Ubuntu