can microsoft use up any more space?

so i bought myself a new laptop with vista on it about a month ago. it came with a hard drive that's been partitioned into two logical drives, each about equal in size. and i've been gradually loading it with the various softwares that i use, with the intention of transitioning to a laptop permanently instead of using my desktop as my main computer.

tonight i happened to notice that my c: drive is at near capacity at around 45 gigs leaving only 5 gigs left. what? i know i didn't load that much sofware and my data files amount to no more than 100 mb. so i began to tally up the sizes of each and every folder on the root directory.

seeing that the "Users" directory is about 20 gigs raised a huge alarm in my head. like i said, i have about 100 mb in data files that are on the c: drive (i make it a point to save all my data files on the d: drive or an external drive). at first, i couldn't find the source of the files that used up the 20 gigs. then i remember that there is a hidden folder for each user, called "Application Data" in winxp, with its equivalent named "AppData" in vista.

it's normally hidden. so i go into Tools>Folder Options at the drop down menu and selected the option to show hidden files/folders. eureka....once the AppData folder showed itself, i drilled further into it (C:\Users\Hue Tang\AppData\Local\Temp). this temp folder holds 20 gigs of files that should have been deleted when its usefullness has come to an end. but every useless file stuck around. unbelievable. deleted the contents and i've just reclaimed more than a third of my c: drive.

microsoft, if you are listening, this may be another reason why people don't want to use vista. even though hard drive space is cheap, it doesn't mean that there is an endless supply, especially on a laptop. what are you thinking?

and on another matter, why do you schedule things to happen in the middle of the night? do you actually expect people to leave their computers on 24/7? in this time and age when people are trying to conserve energy and do all they can to save the planet, you aren't doing anything to help. you don't manufacture a lot of hardware, but in my opinion, you are one of the worst polluters on the planet for not adopting the right attitude. you're presence is widespread enough that if everyone left their computers on at 2 am for updates, this planet is sure to be in a worse situation overnight.