Funny .so situation under FC5 test 3

[Davide Bolcioni]

Greetings,
I am testing a binary-only application under FC5 test 3 and find the 
following situation:

- ldd on the main executable shows, among others,

     libstdc++.so.5 => /usr/lib/libstdc++.so.5 (0x40050000)

- ldd on a .so loaded by the main executable shows, among others,

     libstdc++-libc6.2-2.so.3 => /usr/lib/libstdc++-libc6.2-2.so.3 
(0x4014c000)

The application seems to work but the above situation is new to me,
why did this happen ? Is this a problem ?

Thank you for your consideration,
Davide Bolcioni