This no longer seems to be an issue in Ubuntu Software Center 5.1.14.1, Ubuntu Precise Beta 2. The expansion of items when navigating either up or down in the list does not cause the the items to "jump around". I'll set this one as fix released.
** Changed in: software-center (Ubuntu) Status: Triaged => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/533329 Title: Highlighting apps in software list view should expand down not up To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/533329/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs