Does Win 7 style builder do any downloading and installing updates of some kind? Or does it need to launch stuff un-provoked from within the user space? I use AppGuard and this is what was blocked from launching. I went to the folder and the icons for the generated numbers below match those of Win 7 style builder icons in the Start Menu.
02/02/10 05:34:51 Prevented process <_7d494fd85d72d3b01e64aa.exe> from launching from <e:\users\seven\appdata\roaming\microsoft\installer\{afdf950d-3814-4f98-b66f-8c286a69f405}>.
02/02/10 05:33:08 Prevented process <_6feff9b68218417f98f549.exe> from launching from <e:\users\seven\appdata\roaming\microsoft\installer\{afdf950d-3814-4f98-b66f-8c286a69f405}>.
02/02/10 00:30:14 Prevented process <_b00933cae30e67a5f3d57c.exe> from launching from <e:\users\seven\appdata\roaming\microsoft\installer\{afdf950d-3814-4f98-b66f-8c286a69f405}>.
02/02/10 00:30:13 Prevented process <_9cdec52ed5f2e1cfe959ae.exe> from launching from <e:\users\seven\appdata\roaming\microsoft\installer\{afdf950d-3814-4f98-b66f-8c286a69f405}>.
02/02/10 00:30:13 Prevented process <_02e35e7d483511469b8211.exe> from launching from <e:\users\seven\appdata\roaming\microsoft\installer\{afdf950d-3814-4f98-b66f-8c286a69f405}>.
02/02/10 00:30:13 Prevented process <_7d494fd85d72d3b01e64aa.exe> from launching from <e:\users\seven\appdata\roaming\microsoft\installer\{afdf950d-3814-4f98-b66f-8c286a69f405}>. 
