Comment 20 for bug 223075

I've just upgraded my laptop to 9.10 and as expected menu toolbar gets fat ;)
What I discovered: Changing icon theme solves the problem, but I like my icons - so the simplest way is to copy f.e. <my_icons>/22x22/places/start-here.png to 32x32/places/... Then we need to delete icon-theme.cache in /usr/share/<my_icons>/ and restart gnome-panel (killall gnome-panel). That works perfectly for me ;)
conclusion: for some reason gnome-panel ignores panel size and sets icon-theme to 32x32 after distro upgrade. But where these settings are stored?