user@pc:~$ man ls
/usr/bin/gtbl: error while loading shared libraries: libstdc++.so.5: cannot
open shared object file: No such file or directory
groff: error while loading shared libraries: libstdc++.so.5: cannot open
shared object file: No such file or directory


I got this error while executing man.... what can I do?

I'm quite a newbie..., my slack is the 9.1

Thanks for help.

Mario