Update March 2016:
It seems that TrueCrypt is no longer developed, which will lead to future security bugs not been fixed.
This appears when opening the TrueCrypt's website: "WARNING: Using TrueCrypt is not secure as it may contain unfixed security issues. This page exists only to help migrate existing data encrypted by TrueCrypt. The development of TrueCrypt was ended in 5/2014 after Microsoft terminated support of Windows XP."
