Do you have any "optimization" tools running on your system that try to pre-cache things? Backup software? Virus scanner? Do you have indexing activated for NTFS? Does the extended boot time still exist after serveral successive reboots? Because there's nothing in P5 SR4.1 that runs until you explicitly launch the program. The initial copy protection was removed with SR1. All that SR4.1 has are a few registry keys, and even those aren't vital and do nothing whatsoever at boot time. My guess is that some part of your system is scanning the P5 directory during bootup, and especially the runtime folder has lots of files in it.