Why Windows 7 SP1 Takes So Long To Download?

Today I decided to rebuild my computer system because it was running slower than usual. after doing a complete back up of my files, and installing the OS, I have spent the last two hours installing updates, and security patches. it’s been more than 45 minutes since I started downloading Windows 7 SP1 through the windows updates, and still 24% completed:

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I do not know why the hell Windows 7 takes so long to download a 88 MB file ( Fiber Optic 100 Mbps up and down Internet speed ) my laptop runs on a i3 processor, and 3 GB of RAM. with this hardware this laptop shouldn’t  be this slow, and I have loaded Windows 7 many times for other users, and it always takes almost an hour to download the service pack.. the question is why?

then after restarting. the assembly process. another 30 minutes.

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Microsoft operating system keeps getting bloaty and bloatier in every release. I wonder how Windows 8 will be, it probably will require a full day to install, and another to run the updates.

I started the Windows 7 installation around 3:30 PM, and its 8:49 PM, and still haven’t finished the setup yet. this is ridiculous!!