Plasma breaks now in experimental respo

[Ningyu Shi <shiningyu@gmail.com>]

Hi! After I update my kdelibs & kdebase-runtime to 4.2.1-1, everytime
kde startup, after the splash screen, plasma crashes for 4.2.0-1. Then
plasma (kdebase-workspace-bin) updated to 4.2.0-2 today, it doesn't
crash now, but the desktop is not showing up leaving only a empty
background with some red crosses on it. Do you guys have any hint on
this?

btw, when will all the kde related packages be expected to updat to
4.2.1? I guess that might solve my problem :)
Thanks
Regards
-- 
Ningyu