Goodbye, ICQ!

outubro 16th, 2008
Português Brasileiro English

A long time ago, when there wasn’t any Google, the Internet was a world with a few web pages, some FTP sites, IRC networks and chat rooms that connected us to a world of new knowledge and people. It was in this world that in 1996 a small company launched a totally unknown and revolutionary service: ICQ.

Mirabilis, an Israeli company, was responsible for changing the way we communicate over the Internet: instead of talking to hundreds of people in chat rooms, we started to communicate to people that really matter to us. The ICQ rapidly became an enormous success and was promptly copied by AOL, Yahoo and, of course, Microsoft.

Many things happened since then and nobody still uses ICQ, at least in Brazil. In my 70-contact list, only one gets rarely online (if he gets to read this post he will certainly know it). The rest of the time I get 69 offline contacts and, eventually, bots trying to send me some strange junk. Thinking about it I was curious to know if this kind of SPAM is still effective or if it’s the last breathe of a dying worm getting hit by the Darwin’s theory.

It was that time that I realized that ICQ was no longer usable for many years and I was too tied to my UIN. I thought about closing my account but apparently this option doesn’t exist! Also considered selling it on eBay, checked on the prices and realized that my pristine UIN deserved a better ending. This is how I decided to download the latest ICQ version, empty my contact list and change the password.

Rest in peace, 2254708.

.com.br Domains for Ordinary People - Finally!

abril 17th, 2008
Português Brasileiro English

“By decision of CGI.br (Internet Comitee for the Internet in Brazil), the domain .COM.BR, used for generic commercial activities on the Internet, will be available for registration with CPF (they’re like Social Security Numbers). It means that” finally the CGI.br thought about easing the life of brazilians, possibly reducing the evasion of domains to other countries and bloating the income of registro.br (the only registrar for .br).

Ref: http://www1.folha.uol.com.br/folha/informatica/ult124u392807.shtml

High Performance SSH and Data Transfers

fevereiro 16th, 2008
Português Brasileiro English

Everyone who tried copying a large file across the local network via SSH knows that there’s a large performance loss when compared to other file transfer protocols. I thought I know the cause for that: encryption overhead. Then I knew that I was wrong when read this article, that blames statically sized buffers used by OpenSSH.

And the article about High Performance SSH makes reference to another article, also very interesting: Enabling High Performance Data Transfers. It shows how to tweak various operating systems to enlarge the TCP buffers in order to get better TCP performance.

If you’re thirsty for performance you should download the patch, compile your own OpenSSH and reconfigure your operating system right now! If you’re lazy, like me, wait until the patch gets merged into OpenSSH and use Linux 2.6.17 or newer: it automagically configures TCP buffer sizes! ;-)

Nikon D70 for sale

fevereiro 14th, 2008
Português Brasileiro English

I’ve listed on Mercadolivre (crappy eBay’s partner for Latin America) my beloved D70, which made me company in many good times, adventures, etc. Yet my masculine nature forces me to abandon her and move to another younger camera. If you’re interested in a good semi-professional camera this is your chance: bid on it!

LIVE Pixels! :-D

fevereiro 14th, 2008
Português Brasileiro English

Previously I’ve written that my Macbook Pro had dead pixels, but it turned out to be only DIRT!

I gently slapped the screen until it came out of the visible area. :-D

Asus Eee on steroids

fevereiro 3rd, 2008
Português Brasileiro English

The Asus Eee is causing a bug frenzy because it offers the users a very useful, yet not bloated, portable computer for a fair price. It doesn’t come with a lot of features but a crazy man named Torsten Lyngaas published detailed instructions on how to install a bunch of nice features inside the gadget:

  • USB HUBs
  • GPS with embedded antennas
  • Bluetooth
  • SD card reader
  • Aditional FLASH storage
  • 802.11 n (Also known as Draft-n)
  • FM Transmitter
  • Modem

At this point one may ask how much did this cost. Aproximately USD 450.00, that added to the Eee’s price makes this a fun, yet expensive, experiment. :-)

Mac OS X Leopard Up-to-Date Program

janeiro 30th, 2008
Português Brasileiro English

People living in Brazil are used to everyday discrimination regarding offerings and user support. Those who doesn’t live in USA are used to stay out of every offer, but it’s not what happened in Apple’s Up-to-Date Mac OS Program. It works like this: if you buy a mac before a certain date, usually one month before the launch of the next Mac OS, you have the right to update your Mac OS to the latest version paying only for the shipping of the upgrade DVD.

Disconsidering the delay in the start of the program in Brazil (which started weeks after the USA program) and the delay of the shipment of the Leopard DVD, I don’t have anything to complain about Apple’s user service in Brazil (delivered through it’s authorized reseller Cargraphics). I’ve got my DVD and I’m going to upgrade my MacBook Pro in the next few days.

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What's Activation?

janeiro 27th, 2008
Português Brasileiro English

When chatting about unlocking iPhones I realize that many people have trouble understanding the concepts involved in the process:

  • Jailbreak
  • Activation
  • SIM Unlock or just Unlock

This is the second of three posts on this theme.

Activation

The iPhone comes out of the box with all its features disabled, like a beautiful paperweight, and to enable them you have to join a service plan from the mobile phone company. After that the you get rid of the activation screen and get to use all the phone features, if you’re using an authorized SIM card. This is the activation process just like Apple wanted it to be.

Activating the iPhone in the modding context mean to enable the access to the iPhone features without signing for a service plan and have been done in many different ways.

The most used activation methods requires you to first jailbreak your phone and scince the launch of the jailbreakme.com website there’s a confusion about Activation and Jailbreaking because that site executes both the Jailbreaking and Activation in one step, making naive people believe (you’re not a part of this group of people anymore) that a jailbreak removes the activation screen.

Activation is the method used to enable the use of the iPhone without signing for a service plan from the mobile phone company.

What is Jailbreak?

janeiro 25th, 2008
Português Brasileiro English

When chatting about unlocking iPhones I realize that many people have trouble understanding the concepts involved in the process:

  • Jailbreak
  • Activation
  • SIM Unlock or just Unlock

This is the first of three articles that explain this concepts. I presume that the reader knows some of the elementary concepts of computer science like hardware, software and input and output devices. If you think you do, keep reading!

Jailbreak

According to Wikipedia, Jailbreak is the act of breaking into or outside a “jail”, which is a commonly used access control technique used in computer security.

The jailing technique consists in putting all the resources needed to run a given task (i.e. software and data files) inside a jail where the communication of what’s inside and what’s outside is restricted.

The iPhone has one of these imaginary jails that aims to block anyone from installing software in it without authorization from Apple. Jailbreaking is, therefore, the act of installing and running unauthorized software in the iPhone. That software can be either end-user applications like Apollo IM and Summerboard or programs that modify the inner workings of the iPhone, like anySIM.

Jailbreak is a set of techniques and tools used to install unauthorized software on the iPhone.

Dead pixels == :-(

janeiro 25th, 2008
Português Brasileiro English

I’m loving my Macbook Pro but today I’ve noticed some dead pixels in my screen. :-(

Gotta check if the warranty covers it…

Macbook Pro Dead Pixels


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