Just in case I ever come across this problem again.
If OpenOffice 3.2 repeatedly crashes on dialog boxes for open/save/insert image/etc, the fix is to install a single package that seems to import the proper dialog box tool kit: openoffice.org-gtk
This is probably something that only happens to Kubuntu users, as openoffice.org-gtk doesn’t sound like a package you’d need on kde.
Anyhow, if you’re using kubuntu, the fix is as simple as:
sudo apt-get install openoffice.org-gtk
And instantaneously, everything works again.