This seems to be a packaging bug that has been corrected in Edgy. Openbox itself does not need these libraries and they are not included.
On the other hand obconf does not work because of this, that is reported as bug #62346. ** Changed in: openbox (Ubuntu) Status: Unconfirmed => Fix Released -- Missing libobrender.so.1/libobparser.so.1 https://launchpad.net/bugs/60210 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs