Subject DBLookupCombo control has a problem
Author Jason Wharton
If you are using this control be sure to set RecordCountAccurate to false.
Otherwise, in the DropDown method this control will do a record count which
will potentially be quite expensive on the server.

This is new with IBO4 since I changed how the RecordCount property behaves.
Actually I think late versions of 3.6 did this too but I just realized (with
the help of Craig Stuntz's patience with me) that IBO4 leaves a potential
problem open that used to not be there with IBO.

Regards,
Jason Wharton
CPS - Mesa AZ
http://www.ibobjects.com