Tried the same file on gentoo that is not affected. Apparently it is ubuntu specific.
Some details: Edgy on a core 2 duo laptop (DELL D820) Openoffice version 2.0.4-2ubuntu0.4 (http://people.ubuntu.com/~doko/ubuntu/) -- OO calc hangs in saving file https://launchpad.net/bugs/75385 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs