Update: Further investigation showed that the updater says the update to Patch 2 succeeded sucessfully, maybe a reboot will show the correct patch installed.
On XP the update applies correctly and shows Patch 2 installed immediatly after a successfull installation.
It seems that windows 7 needs a reboot/or restart of the Mcafee services before it shows the installed patches in the About Virusscan box.
Small bug perhaps, but nothing major.
See my latest comment.