100% cpu from OpenBase maintenance -- what's going on here?

[episteminical]

Fairly often (but not always), my Macbook Pro has six strange processes running. They're named MaintenanceProce in Activity Monitor, and each uses ~30% CPU (they add to more than 100% because it's dual-core, I guess?), 2 threads, and ~3.3 meg of memory. They're PowerPC processes, being run by root as a child of OpenBase.

ps output:

  279  ??  R    157:58.58 /Library/OpenBase/Procedures/MaintenanceProcedures.proc -parameters YES -output /tmp/WOVendor_ProcedureDescription -databaseName WOVendor -databasePort #20228 -path /Library/OpenBase
  280  ??  R    157:58.94 /Library/OpenBase/Procedures/MaintenanceProcedures.proc -parameters YES -output /tmp/WODiscussionBoards_ProcedureDescription -databaseName WODiscussionBoards -databasePort #20227 -path /Library/OpenBase
  281  ??  R    157:59.65 /Library/OpenBase/Procedures/MaintenanceProcedures.proc -parameters YES -output /tmp/WOPetStoreX_ProcedureDescription -databaseName WOPetStoreX -databasePort #20226 -path /Library/OpenBase
  282  ??  R    157:57.02 /Library/OpenBase/Procedures/MaintenanceProcedures.proc -parameters YES -output /tmp/WORealEstate_ProcedureDescription -databaseName WORealEstate -databasePort #20224 -path /Library/OpenBase
  283  ??  R    157:57.86 /Library/OpenBase/Procedures/MaintenanceProcedures.proc -parameters YES -output /tmp/WOSchool_ProcedureDescription -databaseName WOSchool -databasePort #20225 -path /Library/OpenBase
  284  ??  R    157:57.25 /Library/OpenBase/Procedures/MaintenanceProcedures.proc -parameters YES -output /tmp/WOMovies_ProcedureDescription -databaseName WOMovies -databasePort #20223 -path /Library/OpenBase

Those files aren't in /tmp.

Any idea what's going on?