Why might two firewalls interfere with each other?

Question

I noticed that in the security center for vista there was a notice that said that two firewalls might interfere with each other. Why is that?

Check this link http://www.freewebs.com/klyeme/vista.htm

Answer 1

Most likely there horny or horney

Answer 2

Because they are both trying to do the same job.  And why do you want to have two fire walls anyway?  Just pick the best one and disable the other.

Answer 3

Because you don't need two hands to hold one fork when you eat.

One firewall can do the job. Why use two ?

Two firewalls use up alot of system resources and slow down your system. Same thing with anti-viruses programs.

You don't need two programs to do the job of one program. You use the one that is the most effective program.  

Answer 4

because of a argument issue between who uses what of the same code between the firewalls. if one uses the code, then windows blocks the other program from using the same code. if they both use the code at the same time. the computer will freeze or crash since it is connected to the system.  

Answer 5

It's the same as having two girlfriends and them both knowing about each other