Listboxes don't show item while Comboboxes do

Binary package hint: openoffice.org

I had a couple of forms made in OOo base that have Listboxes in order to show, in a popdown menu, data from a MySQL db. Things did run just smooth until OOo 2.3 (ubuntu 7.10); after upgrade to 8.04 and OOo 2.4:

Listboxes didn't show menus anymore (no changes were made to base file after upgrading), they just have an empty list;

changing listboxes with comboboxes works, BUT, after .odb file is saved, if I try to reopen it, OOo complains it's a file type it doesn't recongnize and propose to choose a filter, there's no filter for base documents so I'm stuck with a document I cannot use.

This bug is driving me crazy since I cannot fix the menus without corrupting the file itself.

Any help will be much appreciated, thanx!

ProblemType: Bug
Architecture: amd64
Date: Tue Jun 10 11:05:37 2008
DistroRelease: Ubuntu 8.04
NonfreeKernelModules: nvidia
Package: openoffice.org-core 1:2.4.0-3ubuntu6
PackageArchitecture: amd64
ProcEnviron:
 PATH=/usr/lib/openoffice/program:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: openoffice.org
Uname: Linux 2.6.24-18-generic x86_64