A few months ago, I decided to purchase a SheevaPlug Development Kit to replace my previous home server which was an old Dell workstation. The main reason to replace the old machine was power usage, for a machine that is sitting idle most of the time, it costs a lot of money to run.
All I needed was a device on which I could run linux to run some typical core network services (DNS, DHCP, NTP) as well a some extras like my internal mail server and proxy. With a power consumption of only a few Watts, the SheevaPlug was ideal for this purpose. Its a pretty small device with the following specifications:

Update: This no longer works with the 3.1 firmware - go thank Apple & Mobistar for that..

The easiest way to enable tethering on your iPhone is to browse to websites like http://help.benm.at which have configuration files that you can install on your phone. However, all the mobileconfig files I found online didn't work for me as they used the wrong APNs. My account needs to use "web.pro.be" for data and "mms.be" for MMS.

So I created my own mobileconfig, attached to this article. Use at your own risk, I'm not going to guarantee that anything here is correct, but it has been confirmed to work (both tethering and MMS) by several people. To install, simply open the attached file from your iPhone.

Of course, keep an eye on your bandwidth consumption, it isn't cheap.

Cleaning up my home directory, I found this presentation I made back in 2006 while beta-testing the policy based routing functionality in netscreen firewalls.

Posting it here as it might be of use to some people.

Social bookmarking services like Delicious are great for sharing your bookmarks with others or just across multiple computers. But one disadvantage of having them stored in a central location is that you have no control over the backup strategy they use. What if they suffer from a system crash and lose all your data?
If you think I'm just being paranoid, think of what happened to Ma.gnolia recently.

Just to be safe, I wrote a simple little script that takes a copy of all my bookmarks - in XML format - and stores it locally on my PC. Because it is in XML format, converting this data to some other format in the future should be fairly trivial.

#!/bin/sh
 
# Your delicious username and password, separated by a colon
CREDENTIALS="UserName:YourPassword"
# Location where the backup will be stored
BACKUP_DIR="$HOME/backups/del.icio.us"
 
 
if [ ! -d "$BACKUP_DIR" ] ; then
  mkdir -p "$BACKUP_DIR"
fi
 
DATE=$(date +"%Y%m%d")
curl --user "$CREDENTIALS" -o "$BACKUP_DIR/bookmarks-$DATE.xml" -O "https://api.del.icio.us/v1/posts/all"

The script is run from cron on a regular basis, so even if something were to happen to Delicious, I still have a copy of all my bookmarks. Lets hope I never need it.