Reproduced in VMware. Probably a bug in either cdebconf or the underlying newt library.
** Changed in: debian-installer (Ubuntu) Sourcepackagename: debian-installer => cdebconf Status: Unconfirmed => Confirmed -- Alt + Tab freezes progress bar https://launchpad.net/bugs/47643 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs