hack password with possible combinations

Due to the very tristním habits with us today, you taste of how much good you've locked the * * their data and approaches. the time required to crack the password depends on its length and diversity of the characters used. We conducted tests and calculated the time spent.These values ​​are for computer Pentiem4 at 2.5GHz. Only lower-case letters

Number of characters	Possible combinations	Required time
4 characters	456976	0.20 seconds
8 characters	208827064576	2.30 hours
12 characters	95428956661682200	121 years

The entire ASCII table

Characters	Possible combinations	Required time
4 characters	268435456	11 seconds
8 characters	72057594037927900	91 years
12 characters	19342813113834100000000000	24.5 billion years

We can only deliver, and how many of you have a password that is used commonly to 4 characters?? He will come to you 11 seconds as the perfect protection of your data and approaches?? so quickly to the machines and change a few passwords. Times are approximate, as the password if you use date of birth of their children who have conscientiously in the IP and lies in bblízkosti PC, then you can only help attach the printed invitations to join the system, that perhaps the attacker gets dull.