windows build warnings

hello

when building pg_admin with profile "Release->Win32" from trunk I get those warnings:
Warning 1 warning C4627: '#include "wx/generic/gridsel.h"': skipped when looking for precompiled header use c:\work\repository\pg_admin\pgadmin\frm\frmEditGrid.cpp 17 pgAdmin3
Warning 2 warning C4627: '#include "ctl/wxgridsel.h"': skipped when looking for precompiled header use c:\work\repository\pg_admin\pgadmin\frm\frmEditGrid.cpp 19 pgAdmin3
Warning 3 warning C4627: '#include "wx/generic/gridsel.h"': skipped when looking for precompiled header use c:\work\repository\pg_admin\pgadmin\dlg\dlgEditGridOptions.cpp 18 pgAdmin3
Warning 4 warning C4627: '#include "ctl/wxgridsel.h"': skipped when looking for precompiled header use c:\work\repository\pg_admin\pgadmin\dlg\dlgEditGridOptions.cpp 20 pgAdmin3
Warning 5 warning C4627: '#include <wx/generic/spinctlg.h>': skipped when looking for precompiled header use c:\work\repository\pg_admin\pgadmin\dlg\dlgDatabase.cpp 14 pgAdmin3
Warning 6 warning C4627: '#include <wx/sysopt.h>': skipped when looking for precompiled header use c:\work\repository\pg_admin\pgadmin\ctl\ctlSQLBox.cpp 15 pgAdmin3

using :
Microsoft Visual Studio 2008 9.0.21022.8 RTM with Microsoft Visual C++ 2008 91605-031-5000002-60990
wxMSW-2.8.10

the built exe does not crash, but I feel kind of insecure.

Madis Pärn