While starting the install procedure, have you used custom settings and disabled the run an on demand scan at finish option which is enabled by default ?
You might want to do that and see if helps.
Hi Please can you tell me where this is option is to disable within the Epo 4.0 console ?.
All I did was to install the patch into the epo console and then the clients automatically downloaded the patch. I have tried to find the option to disable the scan by default but so far I can not find it.