Update Rollup 2 is available for Microsoft CRM 1.2

Update Rollup 2 is a tested, cumulative set of updates for Microsoft CRM Server 1.2, Microsoft CRM Sales for Outlook 1.2, and Microsoft CRM-Exchange E-mail Router 1.2, including performance enhancements, that are packaged together for easy deployment.

Find more info here:
http://support.microsoft.com/default.aspx?kbid=904435

Or download the package here: http://www.microsoft.com/downloads/details.aspx?FamilyId=172861AE-D02E-4441-B432-26E88DD0AB14&displaylang=en