Hash Function Attacks

Here are two X.509 certificates that have identical MD5 signatures. The research team is currently working on two X.509 certificates that have the same SHA-1 signature. Scary when everything you depend on via the Internet when you purchase items are based on this type of hash to protect you.
Schneier says that you can find MD5 collisions in eight hours with a 1.6Ghz computer.
Via Schneier