Frank Steinmetzger <Warp_7 <at> gmx.de> writes:
> I've had a similar issue when switching logins between KDE 4 and 3 regularly > - > The menu went missing in 3 from time to time. As solution I was told to run > kbuildsycoca. In your case (for KDE4) you need to run kbuildsycoca4. All I had to do was run 'kbuildsycoca4' as a normal user from the command line with the old kernel, reboot and it was fixed. thx, James