The Little Geeni

When the Reiser FS kernel detects an error on the hard drive, it prints some error messages on the screen. It might be a bug. In the Super Block of Reiser FS file system, there is an Error pasture. It is set when file system kernel notices something bad.

So, what happens in this case? May be the Linux user could not read Syslog and could not see the error message or the error is simple an overture of memory corruption, which could lead system to crash.

In such situations, when you reboot the system, this goes in the merry way, mounting Reiser FS file system with known errors on the same, using badly allocated memory locations, B-trees and directories etc. Double allocation of memory blocks and overwriting of blocks may also take place, making the files corrupt.

The final result of this whole problem would be the severe file system corruption. At this point of time, it becomes completely impossible to fix the file system errors for the user. No disk repair utility can detect the errors.

In even the worse scenario, the Reiser FS read Super Block code overwrites the Super Block at mount time. It makes the situations worse and the file system totally useless. After crash, you might come across the following error messages:

“S->u.reiserfs_sb.s_mount_state = SB_REISERFS_STATE(s);

s->u.reiserfs_sb.s_mount_state = REISERFS_VALID_FS”

In these grave situations, if you continue using system, the problems may become more terrible. The ultimate results of this whole mishap would be the loss of your critical business as well as personal data stored on your Linux hard drive.

At this point of time, the only thing which can save you from going out of business is data recovery Linux. It is the way out to retrieve all of your lost, missing and inaccessible data from logically failed Linux hard drive.

Data recovery Linux can be easily effectively and completely performed with the help of Linux data recovery software. Linux recovery software are easy to use tools, which systematically scan your affected Linux hard drive and extract as much data as possible.

To ensure trouble-free, safe and quick Linux data recovery, it is extensively important to purchase a highly developed and influential data recovery Linux tool. A Linux recovery software of trusted brand will give you the best data recovery Linux results.

Stellar Phoenix  Linux Data Recovery software is the most comprehensive Linux recovery software, offered by the data recovery industry leader- Stellar Information Systems Ltd. With commanding scanning algorithms and methodical scan, it extracts all of your lost data.

Interactive user interface, read only and non destructive nature, live update, and systematic scan are some of the main features which make this Linux data recovery software world class. Phoenix  Linux Recovery is usable with all flavors of Linux operating system.

Linux Cause, Data, File, Linux, Loss, Problems, Reiser, System, Various

Are Computer games responsible for increased back pain cases among the nation’s teenagers?

The problem of low back and neck pain in teenagers is likely to increase significantly in years to come,

This seems on the cards considering the associated health problems of obesity, reduced levels of activity, and the popularity of passive entertainment systems such as play stations that encourage further inactivity and prolonged sitting posture in the adolescent age group.

Terry O’Brien of Back Trouble UK says “While 80 percent of the population are likely to experience low back pain at some stage in their life, there is a worrying trend in the amount of back pain experienced by teenagers.

It is well founded that having another family member with a history of back pain means you are more likely to develop back pain as an adolescent. As does poor family functioning and increased life stress.

Higher levels of stress, anxiety and depression are also associated with adolescent back pain.

Back pain is commonly provoked by sporting activity and static postures such as sitting. It is also known that specific sporting groups such as rowers are at higher risk of back pain.

Children seem to fall into two broad groups, those doing very little activity and those doing too much. Both groups are prone to back pain.However it is the worrying trend of inactivity amongst adolescents that is the greatest cause for concern. Fuelled by the dramatic increase in computer games and multi-media consoles.”

Let us now look at Bio-Mechanics.

Bio-mechanics and its association to Back Pain.

When our body is in the standing position it is in a state of unsteady equilibrium because the base is small and the centre of gravity is a long way above it. That is why it has to be balanced by keeping the centre of gravity over the base, otherwise the body would fall over.

Equilibrium: The steadiness of the body depends on the size of its base and the distance of the centre of gravity from that base. An object having a large base and a low centre of gravity is not easily upset.

The first thing necessary in order to accomplish good posture is to straighten the neck, keep the chin down and back. The second important thing is correct deep breathing.

The line of gravity in the fundamental standing position falls in front of the ears, and in front of the cervical and dorsal vertebrae, through the lumbar vertebrae, through the hip joint, and slightly in front of the ankle joint. But this probably varies in individuals according to their build and height.

“Biomechanics is that branch of science concerned with the understanding of the interrelationships of structure and function of living beings with respect to the kinematics and kinetics of motion”

Poor Posture associated by the following:

Genetic disorders, Familial association, Irregular/no exercise, Bad habits when sitting or standing, Carrying excess loads, (School/shopping) Underweight/Overweight (Inadequate diet)

Mental Attitude towards oneself.

Biomechanics is our way of describing how each bit of your body moves in relation to another bit.

Our bodies are fantastic at compensating when things are not quite perfect but unfortunately when we run out of compensations we usually end up with pain and stiffness.

Let’s have a look at some of the more common biomechanical problems:

Problem 1.

It’s the fashion not to tie trainers and shoes up but this prevents the shoe from supporting the inside of the foot and allows the foot to roll or ‘pronate’ too much in standing and walking.

This means the knee and the hip rolls inwards too much which makes the inside calf and inside thigh muscle shorter. The iliotibial band can then rub against the outside knee giving pain.

Further up, the bottom muscles become too long and stop working as they should do which puts added stress on the pelvis and low back joints. Before you know it you have back pain, knee pain and ankle pain! And all because of fashion!

Problem 2.

Whether you drive 5 miles or 500 miles a day your car seat is really important. In many cars the base of the seat slopes backwards. In fact some of the more expensive cars are the worst because they want you to feel ‘snug’ and safe in the seat. However, this position forces your pelvis to sit too far backwards.

Once this happens your low back and upper back flex forward too much but then your neck muscles have to work really hard to stop your head from flexing too much and allow you to see where you are going. This position then forces your shoulder blades to stretch too far forwards and a large stress is placed on both the front and the back of the shoulder.

The result is neck pain and /or upper or low back pain. This position can exacerbate sciatica as it is a big stretch for the nerves.

The solution is to raise the back of the seat so it becomes more horizontal. Some cars allow you to alter this angle but if yours does not then sit on a small cushion or buy a special wedge shape cushion that fits into the seat.

Terry O’Brien

Back Trouble UK.

Computer Games Back, Cause, Computer, Games, Pain

It’s strange how the network security policies in place at a company can actually damage, rather than enhance their security. Security measures which are too stringent can lead to employees going around security for convenience’s sake. Employees can actually create security vulnerabilities which your IT department may not be able to protect against; because they may be unaware that they exist!

Not long ago, I spoke with the business director of a large company (I’ll call her Susan). Her company’s IT department requires employee passwords for their network be at least eight characters in length and be comprised of a random mix of letters, symbols and numbers. She also must change her passwords every sixty days. While Susan goes along with the security policies put in place by her IT department, if you were to walk into her office, she has her logon password written right there on her desk – “Password: 1jy^hndT”.

The work environment in many companies these days involves understaffing, tight deadlines and long workdays. When you add yet another complication into the lives of already overworked employees, it is only natural that they choose convenience over security. You see everyone doing this; from the CEO on down to the temps. While it sounds like a good idea to have employees remember complex passwords, what happens in practice is that it slows things down and leads to security being circumvented.

The real problem isn’t the security policy; it’s actually a very sound one – it’s the way that it is implemented which makes it a problem. IT departments are prone to ignoring the human factor when they design security policies. Most people can’t remember two complex passwords; and many can’t even remember one! By making employees change their passwords every two to three months, they further complicate the situation and practically force employees to engage in insecure practices in order to get their work done while still complying with corporate security policies.

This gives management a false sense of security when it comes to network security, since they don’t even know where to look for potential problems. Let’s say that someone copies down Susan’s password and logs in as her – the network monitoring software simply accepts as fact that she is working at 3 am. These security systems will not be able to prevent these attacks until the damage has already been done.

Password security which does not offer convenient implementation is not something which comes without a cost. Resetting passwords can take anywhere from 20% to 50 % of an IT departments time – this translates into about $70/incident. This time and money could be better used by your IT department. There are other costs; lost productivity when employees are unable to access the network.

A rule of thumb to keep in mind is that the greater the level of password security without a convenient management system in place, the more often you’ll need to do password resets. Smartcard security tokens offer a solution which balances productivity, security and technical support.

Smartcard based security tokens allow employees to manage network and computer security themselves without compromising the security of your corporate network. They do this by:

1. Offering double, two factor authentication – the user has the card (something they have) and the PIN (something they know). The computer has the card (something it has) and stored complex passwords (something it knows).

2. Being portable to other machines.

3. Having no information is stored on the computer for prying eyes to find and use.

4. Convenience – the user only needs one password.

5. Employees always have possession of their passwords.

6. Token data is securely stored and protected in the event that the token is stolen or lost.

7. The token can store passwords for many accounts.

Smartcard based security tokens prevent data thieves from merely looking over someone’s shoulder to learn passwords or look for notes taped to desks or inside drawers bearing this information. If each account is set with its own unique password, even if a data thief somehow gets one password, all other accounts are still protected. Smartcard based security tokens allow employees to stay within IT security policies and keep corporate networks better protected while offering the convenience employees want and need. This can make even the most careless employee a security conscious one.

Computer Security Breaches, Cause, Data, Network, Policies, Security