Why does build forge skip steps during a build?

We have an intermittent issue with BF no displaying steps executed in the console.  This happens rarely and is not repeatable (on-demand) but it does provide a challenged in understanding of the status of a build.

A reviw of the logs shows the following results.   Any solutions to stop theis from happening.
Version 7.1.3.2
DB2 9.7 3a
All VMWare VM's

Mon 11 Jun 2012 05:11:48 AM EDT: CRRBF2692I: 14917: Build: Job [BUILD4212] for Project [ZZZZZ] started
DBD::DB2::st execute failed: [IBM][CLI Driver][DB2/LINUXX8664] SQL0530N  The insert or update value of the FOREIGN KEY "BUILDFORGE.BF_RESULTS.FK_BF_RESULT1" is not equal to any value of the parent key of the parent table.  SQLSTATE=23503
Mon 11 Jun 2012 05:12:14 AM EDT: CRRBFEEEEE: 14917: Database: DBD::DB2::st execute failed: [IBM][CLI Driver][DB2/LINUXX8664] SQL0530N  The insert or update value of the FOREIGN KEY "BUILDFORGE.BF_RESULTS.FK_BF_RESULT1" is not equal to any value of the parent key of the parent table.  SQLSTATE=23503

Mon 11 Jun 2012 05:12:16 AM EDT: CRRBF0551I: 14917: Database: StackTrace from Process id [14917] called from [
   BuildForge::DB::db2(./PerlApp/BuildForge/DB/db2.pm:65)
   BuildForge::Project::Step(./PerlApp/BuildForge/Project/Step.pm:521)
   BuildForge::Artifact::Project(./PerlApp/BuildForge/Artifact/Project.pm:966)
   BuildForge::Artifact::Build(./PerlApp/BuildForge/Artifact/Build.pm:656)
   BuildForge::Artifact::Build(./PerlApp/BuildForge/Artifact/Build.pm:342)
   main(.bfproject.pl:53)
   main(.bfproject.pl:46)
]