Comment 142 for bug 439448

That is not a good option and will conflict with gdm and could result in 2 overlapping gnome-panels. Saurav please give the reasons why you think this will work and a test case, because all you're effectively doing by running that is killing gnome-panel and restarting it on startup and not every user will know how to take it back to normal, assuming it works of course. Moving the panel and/or removing/reinstating icons seems to work temporarily for most users.