Another fully homomorphic paper recently on eprint:
<a href="http://eprint.iacr.org/2009/616" rel="nofollow">http://eprint.iacr.org/2009/616</a><p>It's also on HN:
<a href="http://news.ycombinator.com/item?id=995203" rel="nofollow">http://news.ycombinator.com/item?id=995203</a>
<i>We see that in practice our scheme appears to obtain a better depth of decryption circuit than theory predicts, although still not deep enough to enable fully homomorphic encryption; at least at practical key sizes.</i>