I did a clean install SCE 2007 with SP1 and deployed the agent to all our clients @ our customer.After a while 90% of our client infrastructure were reporting very slow performance (read icons disappearing from the desktop and no change to hit task manager). People getting mad all over the place ( 150 clients) . After doing some searching I removed all the Information Worker management packs. No change at all after doing this! I investigated even more and was thinking that it could be the Mcafee...(read more)

Read the complete post at http://scug.be/blogs/sccm/archive/2009/01/16/sce-2007-sp1-client-performance-issues-and-pure-frustration.aspx