If you want to use the NM (especially the nm-applet) in Gentoo or ArchLinux, you have to grant the user to access the NM. Therefor you create the following file

# cat /etc/polkit-1/localauthority/50-local.d/org.freedesktop.NetworkManager.pkla 
[nm-applet]
Identity=unix-group:plugdev
Action=org.freedesktop.NetworkManager.*
ResultAny=yes …

GCC (4.5.3) flags for

* Intel(R) Core(TM) i7 CPU M 620
* Intel(R) Core(TM) i7 CPU 920
* Intel(R) Core(TM)2 Duo CPU T7700

CFLAGS="-march=core2 -mtune=generic -O2 -pipe -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -msse4 -mmmx"
CXXFLAGS="${CFLAGS}"
CHOST="x86_64-pc-linux-gnu …

Sometimes its necessary/pleasanter to use the Acrobat Reader for some PDF files like forms...

Enable the multilib repository

# cat /etc/pacman.conf
[...]
[multilib]
Include = /etc/pacman.d/mirrorlist
[...]
# pacman -Sy

Install necessary packages

# pacman -S lib32-libxml2 lib32-gtk2 lib32-gdk-pixbuf2

Maybe there are some more packages still missing on your system …

I've found a very nice tool pv ...

$ dd if=/dev/sda1 | pv | dd of=backup.img
359MB 0:00:05 [75.3MB/s] [    <=>                       ]

Because libvirt self is using the qemu monitor to mange the guests, it is not available for the user. Since version 0.8.6 [1] its possbile to send a command throught libvirt to the monitor.

virsh qemu-monitor-command  

The problem is that you must use the QMP format to send …

aka Firefox, DNS lookups and IPv6 (under Arch)

Since my laptop is running with Arch, sometimes my Firefox makes me crazy when i'm trying to open a new page because it show a message like Looking up heise.de... for minutes !

After googling a few seconds i've found someting that …

force reboot

$ echo 1 > /proc/sys/kernel/sysrq
$ echo b > /proc/sysrq-trigger

force shutdown

$ echo 1 > /proc/sys/kernel/sysrq
$ echo o > /proc/sysrq-trigger

If you're trying to boot the Archlinux 2010.05 CD/DVD/Netinstall and getting the message

ERROR: boot device didn't show up after 30 seconds ...

try this one to fix the problem

$ udevadm trigger
$ exit

If you getting errors like this one

$ /path/to/program
/usr/lib/libcrypto.so.0.9.8: no version information available

you need a libcrypto.so and a libssl.so with version information.

Here are some information about the problem.

openssl has evolved to a very important library in Linux …

$SERVER/deploy/messaging/messaging-service.xml

${jboss.messaging.ServerPeerID:0}

For clustered environment each jboss node need a unique ServerPeerID which must be a valid integer.