problem with database plug-in

["Oliver Skiebe" <oliver.skiebe () alliednetworks de>]

hi there,
when i try to get snort-1.8.1 with -c set to my snort.conf-file working, it
dies with

database: compiled support for ( mysql )
database: configured to use mysql
database:          user = XXX
database: database name = XXX
database:   sensor name = XXX
database: mysql_error: Can't connect to local MySQL server through socket
'/var/lib/mysql/mysql.sock' (2)
Fatal Error, Quitting..

where does it get the path to mysql.sock from and how to change it / how
does it connect to mysql anyway
(i´m quite new to this...didn´t find any compilation options?)

does anyone have an idea? thank you!

-olli