http://blogs.msdn.com/ericeil/archive/2008/05/12/threadpool-changes-in-net-3-5-sp1-beta.aspx.NET 3.5 SP1 (A.K.A. CLR 2.0 SP2) is now available as a Beta release. This beta release has the fix for the ThreadPool ramp-up issue discussed here and here . It also has some other improvements to the ThreadPool's thread creation algorithm that can dramaticallyen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/ericeil/archive/2008/05/12/threadpool-changes-in-net-3-5-sp1-beta.aspx#8500179Tue, 13 May 2008 16:08:50 GMT91d46819-8472-40ad-a661-2c78acb4018c:8500179The Blomsma Code - .NET CLR 2.0 SP2<p>PingBack from <a rel="nofollow" target="_new" href="http://www.develop-one.net/blog/2008/05/13/NETCLR20SP2.aspx">http://www.develop-one.net/blog/2008/05/13/NETCLR20SP2.aspx</a></p>