I met a long-time-ago-but-not-yet-solved problem, the panel failure. It's like after restarting from update, I got a lot of "X widget is has quit unexpectedly" and "The panel encountered a problem while loading "OAFIID:GNOME_ClockApplet"."
Another thing I noticed is the style of panel have changed from BLACK to light grey (just like xfce), and I don't have any clue for this situation.
I had tried every tips to fix that, not all in vain. Is re-installing the final solution? I would like to do, but then I have to rebuild those programs (scipy, ncview, etc.) I used for my work (I install Ubuntu for my science work, and it works perfect for me, even good for parallel computation).
If it is necessary to re-install, please tell me, then I can quickly give up fixing it. Thanks!
My Hardware Spec: AMD64, 3.2GHz, 4GB ram, NVidia GT520.