1
In July 2008, several TrueCrypt-secured hard drives were seized from a Brazilian banker Daniel Dantas, who was suspected of financial crimes. The Brazilian National Institute of Criminology (INC) tried unsuccessfully for five months to obtain access to TrueCrypt-protected disks owned by the banker, after which they enlisted the help of the FBI. The FBI used dictionary attacks against Dantas' disks for over 12 months, but were still unable to decrypt them.[38]
2
The TrueCrypt License has not been officially approved by the Open Source Initiative and is not considered "free" by several major Linux distributions (Arch Linux,[39] Debian,[40] Ubuntu,[41] Fedora,[42] openSUSE,[43] Gentoo[44]), mainly because of distribution and copyright-liability reasons.[45]
TrueCrypt 6.3a (released Nov 2009) comes under TrueCrypt License Version 2.8 which was changed in some places from the 2.5 license, but TrueCrypt is still not included in any of the major Linux distributions.
That is why it is not in the standard repos.