As usuall Microsoft has done it again and I am not surprised. There is no single patch or Service Pack released by Microsoft which is uncontroversial. Even after Service Pack 2 release of MOSS, it makes sure that they keep getting calls to PSS support.
When you install the 2007 Microsoft Office servers Service Pack 2, the product expiration date is activated incorrectly
Link to download WSS 3.0 SP2
Link to download SP2 for MOSS 2007
Read more information on SP2