The path (within the tar.gz files) for the install files should be unique across versions. Currently, LibO3.3beta1 and LibO3.3beta2 installer files will be unpacked to the same path - en-US. It is likely to happen, that you end up with a mix of beta1 and beta2 files in the same path - and install will fail. Proposed fix is to add buildnumber (oder some other id) to the path, so that we have e.g. LibO_3.2.99.2_en-US.
this is for the universal build I guess, wonder what we really want to do with the universal build going forward, I look at it as just a temporary convenience in the absence of a supporting distro. But anyway I suppose it is not a bad idea to prefix the path ( or add an extra folder level ) -> Petr who knows about all things packaging
I have hacked installer to use versioned path, e.g LibO_3.3.0beta3_20101103_Linux_x86_install-rpm_en-US instead of en-US. It is the commit http://cgit.freedesktop.org/libreoffice/bootstrap/commit/?h=libreoffice-3-3&id=d166e81980fb8f02411005862d5ab5b3a4f57bdd Let's see if it is better.