I finally found the reason for this bug. It is a bug kubuntu-default- settings, which supplies a default kwinrulesrc file. This file should set up some default sizes for certain applications. However, it has the effect that these sizes are used every time you open one of those applications. I've attached a modified kwinrulesrc, which you can put into $HOME/.kde/share/config. This should fix the bug.
** Attachment added: "kwinrulesrc" http://launchpadlibrarian.net/20981590/kwinrulesrc -- Window sizes of KDE applications (KDE 4.1) don't get stored anymore https://bugs.launchpad.net/bugs/286907 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs