http://msmvps.com/blogs/cmullins/archive/2007/05/19/concurrency-patterns-and-anti-patterns-for-enumeration.aspxAllowing Collection Iteration in a Framework in such a way as to be concurrency friendly is tough. I've done it several wrong ways, and now, I think, I've stumbled onto the right way. Read More...enCommunityServer 2008.5 SP2 (Build: 40407.4157)