Hi friends,

While installing thunderbird it is showing following error.

./thunderbird-bin: error while loading shared libraries: libstdc++.so.5: cannot open shared object file: No such file or directory

what is the problem?

You have to install the older version 5 of the libstdc++ shared library. Which linux distribution are you running on?

Edit: looking at your previous posts, it seems you're running Fedora. If this is the case the package to install is compat-libstdc++-33. You can use either the Add/Remove Software utility or the command
Just a tip: you can update your LQ profile in order to display the distribution you're running on. It will be displayed under your nickname in each post (see mine for example). This will let other users to give more helpful and quick replies, based on the knowledge of issues for a specific distro.

It is a bit odd, because it seems that you want to install an older Thunderbird version on a more recent system? I don't see why the latest Thunderbird would need an old library.
Installing the compat-libs is of course the way to go, if you need to install older application versions by purpose.

linux

@ gergely89 : The latest 'Thunderbird' downloaded as thunderbird-2.0.0.19.tar.gz
actually depends on 'libstdc++-5' ( 'ldd ./thunderbird-bin' )

The source probably contains code, not fixed for gcc-c++-4.x ?

It's not unusual to find code, which must be compiled with 'g++-3.x',
hence the dependency of 'libstdc++-5'

There might be other reasons too .....
....