which hash function is secure?

cranium.2003_at_gmail.com
Date: 05/28/05 

Date: 28 May 2005 02:46:50 -0700

hello,
 On http://en.wikipedia.org/wiki/Hash_function its given that=>
 The MD5 and SHA-1 algorithms are two popular but compromised
algorithms for generating cryptographic hash functions; the SHA-2
algorithm has no known compromises.
     Then does that mean MD5 and SHA-1 are not one way that mean they
can be broken down?
regards,
cranium