When using the fontsize slider of gnome-tweak or ubuntu-tweak to e.g. 1.6 multiplier within gnome 3.2, suddenly when logging into KDE 4.7 the fonts of native KDE applications like dolphin get messed up. This doesn't happen with all applications but with some (dolphin, amarok, kmail, KDE systemsettings ...).
I tried the setting for GTK-fonts in KDE system-settings to be set to "use my KDE fonts in GTK apps" and also the option "use own font" (maybe mistranslated). To the same effect.
I can change the fontsize for all KDE programs manually to another value, apply the changes, restore the previous settings, apply the changes again an derverything works like expected again.
Once I log out or reboot and login to KDE the fontsizes are messed up again (as if the multiplier applies to some of KDE!).
How can I prevent KDE from loading the gnome fontsize settings and solve this issue?