package base-files 5.0.0ubuntu25 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1

[Jalil Karimov]

Binary package hint: base-files

That was scary, right after upgrading to natty i was unable to run firefox and chrome only epiphany, in terminal one could see:
/usr/lib/firefox-4.0b7/firefox-bin: /usr/local/lib/libstdc++.so.6: version `GLIBCXX_3.4.14' not found (required by /usr/lib/firefox-4.0b7/libxul.so)

Then after reboot X wouldn't start! And apt-get was refusing to run with the same c++ error, thanks to failsafe mode i recovered back, but screen was flickering and no way to change refresh rate neither with monitor settings nor in nvidia settings, and even manually editing xorg.conf and restarting X wouldn't make change.

So in failsafe i removed /usr/local/lib/libstdc++* and replaced with 14 from /usr/lib seems did the trick. Now I'm in classic mode, i think, default desktop edition (one with the trash sidebar) is frozen

Yes, and gnome-do got fracked:
Add-in could not be loaded: The required addin 'Do.Interface.Linux.Docky,1.0' is not installed.
Mono.Addins.MissingDependencyException: The required addin 'Do.Interface.Linux.Docky,1.0' is not installed.
  at Mono.Addins.AddinSessionService.ResolveLoadDependencies (System.Collections.ArrayList addins, System.Collections.Stack depCheck, System.String id, Boolean optional) [0x00000] in <filename unknown>:0
  at Mono.Addins.AddinSessionService.ResolveLoadDependencies (System.Collections.ArrayList addins, System.Collections.Stack depCheck, System.String id, Boolean optional) [0x00000] in <filename unknown>:0
[Error 16:01:00.512] [PluginManager] Encountered error loading plugin: MissingDependencyException "The required addin 'Do.Interface.Linux.Docky,1.0' is not installed."

(Do:2617): Wnck-CRITICAL **: wnck_set_client_type got called multiple times.

Add-in could not be loaded: The required addin 'Do.Interface.Linux.Docky,1.0' is not installed.
Mono.Addins.MissingDependencyException: The required addin 'Do.Interface.Linux.Docky,1.0' is not installed.
  at Mono.Addins.AddinSessionService.ResolveLoadDependencies (System.Collections.ArrayList addins, System.Collections.Stack depCheck, System.String id, Boolean optional) [0x00000] in <filename unknown>:0
  at Mono.Addins.AddinSessionService.ResolveLoadDependencies (System.Collections.ArrayList addins, System.Collections.Stack depCheck, System.String id, Boolean optional) [0x00000] in <filename unknown>:0
Error while getting object for node in path '/Do/ItemSource'.
Mono.Addins.MissingDependencyException: The required addin 'Do.Interface.Linux.Docky,1.0' is not installed.
  at Mono.Addins.AddinSessionService.ResolveLoadDependencies (System.Collections.ArrayList addins, System.Collections.Stack depCheck, System.String id, Boolean optional) [0x00000] in <filename unknown>:0
  at Mono.Addins.AddinSessionService.ResolveLoadDependencies (System.Collections.ArrayList addins, System.Collections.Stack depCheck, System.String id, Boolean optional) [0x00000] in <filename unknown>:0
Could not locate Tomboy on D-Bus. Perhaps it's not running?
^C

Love natty!

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: base-files 5.0.0ubuntu25
ProcVersionSignature: Ubuntu 2.6.37-6.17-generic 2.6.37-rc3
Uname: Linux 2.6.37-6-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Mon Nov 29 07:22:11 2010
ErrorMessage: ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release i386 (20100816.1)
SourcePackage: base-files
Title: package base-files 5.0.0ubuntu25 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1