I’ve updated my laptop to Fedora 12 and to be honest it was quite painless however, when i rebooted and logged in, errrr *puke* what the hell has happened to all the icons in the gnome-panels? There is too much spacing, hmm ok not to worry i’ll just move them all, wtf, i can’t move them, is that the default? yup it is.
The panel now adds padding between applets and between icons in the notification area. The padding can be removed with the following commands
gconftool-2 –type int –set /apps/panel/toplevels/top_panel/padding 0
gconftool-2 –type int –set /apps/panel/toplevels/bottom_panel/padding 0
gconftool-2 –type int –set /apps/panel/applets/systray/prefs/padding 0
Phew back to normal 
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I don’t really mind the extra spacing in the panels and systray but I do mind the extra spacing between icons in Nautilus. Haven’t been able to find a way to revert that to the old tight spacing. If you know how to get back the old situation I would love to hear it.