I am experiencing a weird problem of disc space on my hp mini netbook.
I'm getting disc space notification saying low disc space and when I delete programs and files instead of the disc space increasing it is dropping lower than before.
More about :lost space hard drive delete programs files hard
You can lose space to things like Windows restore points, unemptied recycle bins, growing temp directories, browser cache, and passing werewolves.
I usually recommend downloading "Windirstat" and running it with an Admin-privileged login. Enable the display of Unknown space and sort by descending size. It will frequently pinpoint the issue for you.