Released yesterday - this may not be a "bulletin", but it certainly affects the way you get them, if at all:
Microsoft Security Advisory (927891)
Fix for Windows Installer (MSI)
- http://www.microsoft.com/technet/sec...ry/927891.mspx
Published: May 22, 2007
"...Your system may appear to become unresponsive when Windows Update or Microsoft Update is scanning for updates that use Windows installer, and you may notice that the CPU usage for the svchost process is showing 100%... note that this update is the first part of a two-part fix that is the comprehensive solution to the problem. In June, another update will involve the Windows Update client..."
- http://blogs.technet.com/msrc/archiv...y-updates.aspx
May 22, 2007 ~ "...the issue may prevent you from installing other updates (including security updates) until you apply this new update, so we encourage customers to apply this right away."