kubuntu-firefox-installer crashes on launch

[Alvin]

Binary package hint: kubuntu-firefox-installer

Binary package hint: kubuntu-firefox-installer

When launching kubuntu-firefox-installer from the menu, nothing happens.
When launching kubuntu-firefox-installer from the command line:

alvin@liet:~$ kubuntu-firefox-installer
/usr/bin/kubuntu-firefox-installer:47:in `method_missing': undefined method `setIconSize' for #<Qt::PushButton:0x7f045ded4ac8> (NoMethodError)
        from /usr/bin/kubuntu-firefox-installer:47:in `initialize'
        from /usr/bin/kubuntu-firefox-installer:82:in `new'
        from /usr/bin/kubuntu-firefox-installer:82

DistroRelease: Ubuntu 9.10
Package: 10.04ubuntu3~karmic1~ppa1+really9.10

[Harald Sitter (apachelogger)]

PPA backport

[Dennis Schridde (devurandom)]

Is "PPA backport" the reason for "Won't Fix"? Why does the origin in backports ppa make this bug unqualified for fixes? The package should then at least be taken out of there, if it is known to be broken, imo.