Comment 7 for bug 156173

I experienced the same bug, after a few minutes of presentation (with or without effects), cpu usage of soffice.bin increases more and more up to 50% (one cpu core)

uninstalling openoffice-gtk and openoffice-gnome fixed it for me

(Ubuntu 7.10 i386, Intel Core 2 Duo, openoffice.org 2.3.0-1ubuntu5)

I can submit the presentation file if needed.