Installing Visual Studio 2005 Sp1 Hell

Last night i was installing Visual Studio 2005 on my VMWare image with MS Server 2003 r2, it wouldn’t work. On my AMD Turion mobile the install took ages, and then after 2 hours:
“Error 1718. File was rejected by digital signature policy”.
 
The Cause: “This problem occurs if the Windows Installer process has insufficient contiguous virtual memory to verify that the .msi package or the .msp package is correctly signed.”
which MS had fixed in a KB (for server 2003):
 
When i tried again i got a new error after 21/2  hours, disk full (figures)…
 
I found this wonderful artikel about the ins an outs of the SP 1 install:
 
At last i tried the /quiet argument as mentioned in the artikel:
“If not running silently by passing /quiet to the patch wrapper – which means you wouldn’t see any dialogs anyway – Windows Installer makes a copy of the .msp file in the user’s %TEMP% directory because it is assumed to have write access to that location for user. It does this even though the patch wrapper extracted the .msp file to the %TEMP% directory already. This extra disk I/O is one reason it is worth installing the patch silently by passing the /quiet switch. “
 
I started the install right before i went to bed in the hope the next day he was installed. And he was ! pff another night down the drain.