For anyone who’s applied SP2 to a SharePoint Server site (not Windows SharePoint Services tho’) you should check “Attention: Important Information on Service Pack 2” from Microsoft. Basically if you have an affected installation your license has been reset to a 180 day trial. There are some work around for some versions of SharePoint but there is also a patch on the way.
Windows SharePoint v3 is unaffected but Search Server Express 2008 is affected. Don’t understand why as Search Server Express is also a free download from Microsoft, but given this is the work from Microsoft you need to ensure that you install any forthcoming patch so the product won’t expire.
Hopefully not a major issue but certainly something that would worry some very large SharePoint installations. Luckily as SBS 2008 is powered by Windows SharePoint there is no issue.