After updating this weekend no Login Possible KDE [Solved]

[maulbongo]

Hi folks,

After updating this weekend (sabayon-weekly) and using Intel GFX (Mesa) it was not possible for me to Log into kdm again.
I could encounter this problem on two Intel GFX machines and I also have two Nvidia and one ATI machine, there I didn't have these problems.
With one Machine the Language on the Welcomescreen also changed from german to bulgarian (cyrillic), good to always have another machine running
So when trying to login it imediately switches back to Welcomescreen, Fluxbox for example worked.
After some researching I found this message in the /var/log/kdm.log:

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Could not open library klauncher: Cannot load library /usr/lib64/libkdeinit4_klauncher.so: (/usr/lib/gcc/x86_64-pc-linux-gnu/4.5.3/libstdc++.so.6: version `GLIBCXX_3.4.15' not found (required by /usr/lib64/libstreamanalyzer.so.0))

So the reason was found, seemed that the update of base-gcc-4.6.2 did not run correctly.
Ok, what to do.
Go to the cli and become su, then type

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equo install base-gcc-4.6.2 --ask

.
With one machine I also had to make

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equo conf update

and it showed me, that the config of kdm had to be updated, after doing this stuff and rebooting the machines all went fine again.
Hope this helps out.