Confirmed that lsof shows that a pdf is in use by konqueror after viewing its properties, whereas a text file isn't. Using Feisty.
** Changed in: kdebase (Ubuntu) Status: Unconfirmed => Confirmed -- Konqueror locks PDFs after viewing its properties https://launchpad.net/bugs/74204 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs