You should really upgrade ASAP, as this problem can (theoretically) occur when GnuPG decrypts/checks encrypted email messages/signatures (for example).
If you're running Debian unstable:
apt-get install gnupg
Just to prove the world I'm doing Debian work sometimes: I have recently updated the flobopuyo package (needed rebuild because of the C++ transition), the bfbtester package (hey, it took me only three attempts until I f*cking figured out why I couldn't change the section), and cccd (cosmetic stuff).
Nothing to see here, move on.