Just in case this affects other sites. This patch was not very "convenient". Caused network drive access to become intermittently slow. In some cases we ended up with "Not responding". As we have folder redirection running, it effected anything that needed drive access including applications so was a bit tricky to find.
The idea was to speed up a complete rebuild of Win7 SP1 by reducing the number of individual patches. The patch contains patches for feature packs, even if they were not installed. Not sure if this is why is went stupid but sent a lot of techs in a spin.