Don't worry about this file SKU011.cab
Start/Run, type regedit + OK
In Regedit expand HKEY_LOCAL_MACHINE/Software/Microsoft/Office/11.0/Delivery
There u'll find one directory under Delivery. It's your DownloadCode (something like 90000409-3000-............).
Select that directory.
On the right side of the screen, right-click CDCache. Then change the value to 0.
Re-boot ur computer.
It may occur u get a prompt about an error 1311 and claiming for a file like E2561404.cab or PA561401.CAB .....
Plz copy/paste this prompt here, then i'll try to help u to find this file.