I am using windowsXP home.Last month i found that I found that in my Drive C I was left with just 18% of 19.53 GB and that was slowing down my works.With the help from a friend I could remove many unwanted programes and gain upto 6GB.But during the course of a month thereafter for no specific reason 5 to 10 GB is consumed whenever I browse.I down load nothing in the process of browsing.I always watch carefully how much is consumed in every process.Even then I lose disc space.I very often do disc cleaning and try to restore space.Please guide me.  Have you ever joined a "sharing" web site?
That is a site where you let other people use your  commuter to exchange files.

What Anti-Vitus software are you using?my laptop is in my exclusive use and control.No juniors around to meddle withit.My wife doesn't know computing.I have a paid version of Norton.I do not suspect any FOUL play.I do not play games or enter any WEBSITES for having a "look".I do extremely docile browsing.I am a senior citizen.I have a software called Wavepad Master's Edition", a sound processing software(paid version) for years now and is using it often.I have the software in C Drive.Whenever I want to record music I use "WavePad Sound EDITOR".I store the recordings in D Drive.Sometimes I'll have to process the music files from .wav to .MP3.During such times the subject file loads into C Drive from D.After process when i close it, gets back to D Drive by default(by preference).During these times I noticed loss of disk space.There should not be any.The original music file & the processed must go back to D drive and it goes,No doubt.But I notice a loss of up to 100 MB.Sometimes I notice the space recovering slowly.Of late it is not.I use "picasa3".My pic files are in D.Sometimes   I load a folder of pics from D to picasa.I find loss of disc space but it should not be as the original files are still stored in  D and only a copy is getting loaded in picasa3.These loads shouldn't be reducing disc space.I suspect no foul play from virus,worms or the likes.I must be doing  some mistake in my computing.I am a novice to computing.If you are reading it,I have already consumed lots of your TIME.Thank you.Please guide.  have you tried Disk Cleanup? Your sound program likely STORES the files in the temporary directory while processing; and might not be deleting them.I have done disc clean up,defrag etc.I don't share files.I am now extremely careful about every process I do looking at the disk space usage.I have sufficient disk space in Drives D & E.Can I move the space to C Drive? How to go about it?With in a short time my C drive may starve of Disk space.I may encounter problems of slow boot or hangs.Please help me with good ideas. , , , , .What about your My Documents folder?  Do you have a lot of files in it?  Your My Documents folder could be moved to D or E.Check System Restore (System Volume Information Folder) - most likely culprit - uses A LOT of space. Also Temporary Internet Files Folder, Recycle Bin, Temp folder.

You can use a 3rd party app to reapportion your partitions.can you suggest some third party apps which I can use to reapportion partitions in my laptop's disc space.I do not have any idea abt such apps.Please help.Acronis Disc Director is an excellent utility, but it's not free. A good free partition manager is Easeus (http://www.partition-tool.com/)