Subject HUGE Log File

Im no IT guy so bear with me.  I have a 2009 iMac running os x 10.8    It has a 640 gb hard drive.  Firebird.log is taking up 424 gb.  I have a digital X-ray program that uses firebird as it's framework.  They deny they are the culprit.  It uses only 8 gb of space.  The log is contstantly being  written to.  What going on.  Can I trash the log file?