Running Snort

[S M <snort_mail () yahoo com>]

Hi,
I am new to snort and was wondering if anyone could help me with a question i have.  I have a sensor at my house to 
play with for a course i am taking at school.  The sensor only sniffs when i enter the snort directory and type snort 
-D -i eth1, once i do this it works fine for about a day then it stops logging to my MySQL database.  Is there a limit 
to how long the sensor will run?  Also i would like to make it so that the sensor will run like that when the machine 
is initally started, how do i do that?  I am somewhat new to unix as well but i understand the basics fairly well.
 
Thanks in advance for the help.

                
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