Can someone explain why this should be done.Is it similar to disk cleanup? I do a disk cleanup once a week.
122766
There are "tracking" cookies placed on your computers by advertisers that keep record of where you surf so that they can target advertisements to you.  While this is grey as to whether this is invasion of privacy, you CAN control which cookies are placed on your computer.\nMany cookies are useful!!! They keep track of your preferences and settings on websites you use most.\nI'd suggest using Yahoo! Anti-Spyware (Part of the Y! Toolbar) to look for and delete "tracking cookies".  You can also set your security options higher in Internet Explorer (Or whatever browser you use) to prevent or prompt when cookies are detected.
412614
Define "completely deleted"....\n\nIf you simply delete a file, then the area of hard disk that it previously occupied is marked as unoccupied. The data is technically still there.\nIf you _shred_ a file, then the disk space is similarly marked as unused, but first it is overwritten with random nonsense several times, to obliterate any previous data or any signature of the previous data. Generally speaking people only do this when they have particular reason to - most users need not shred anything unless they're totally paranoid.\n\nRawlyn.
669159
could easily be ur PC. clean it out. if you have like 1 gig of space or less on your hard drive i noticed the computer will go into like... order or priority mode where it takes forever to do anything unless its directly related to your operating system. reformat! or clean up ur pc =/
408789
start>all programs>acessories>system tools>disk cleanup
490133
Delete some files or uninstall some progarms from the hard drive to free up some space.
557636
Start->programs->accessories->system tools->disk cleanup.\nSelect the drive u want to clean.
523854
ummm, this is a HORRIBLE idea.... but ok, go to START- SEARCH, and search by date... delete the files you don't want.
136210
Have been watching this question because I was hoping someone knew the answer. Apparently they don't. My only guess would be that you have too much memory stored up, and need to use your disc cleaner more often. If you are not happy with the disc cleaner that came with the computer, you can download a free CCleaner {crap cleaner}, at http://www.ccleaner.com ---good luck. \nHow much RAM do you have? You may need to add more, or delete/uninstall some of the stuff you have on your computer.
260273
Delete some of the files that you do not need or use, and it usually runs faster.  I don't mean just erase like two or three files, I mean a lot.  I had over a thousand songs on my computer, and it ran very slow.  I deleted a lot of them (i now have 300) and a lot of other files and programs that I didn't use or need, and it runs so much faster!  Try that, if it doesn't work, then I don't know what to tell you.
641691
This is a temporary file which gets created when we install new programs / softwares. Generally they are stored insite temp folder in c:&#92; or c:&#92;windows folder, \nWe use diskcleanup to clean these tmp files from our PCs. \nstart,run, cleanmgr \nor search for *.tmp < delete all the .tmp files from your system which Are no longer needed. \n\nregards.\nVictor \nMS Directory Services
73710
Yes, it is "safe" to delete these files. Many times, Disk Cleanup does not recover everything. The only problem that deleting these TEMPorary files is that--as was said before me--software puts files here to assist in un/installating of programs and such, and if you attempt to re-install these programs, they will take a bit longer. But the fact of the matter is that many times these files are useless and take up space unnecessarily after installation...\n\nShucks, even more common is the fact that these files aren't ever used again even if you do reinstall a program, for the script that is run when you click "Setup" or "Install" will extract all of these files again anyway. It would be nice if programmers gave you an option, which would make these temp files more useful, but hey, when I reinstall my programs, I like for all of the files to be fresh from the cabinet!\n\nGo for it, partner... \n\nHope this helps...
121760
Really for real use C-Cleaner it is safe and sane. \nhttp://www.ccleaner.com/ccdownload.asp\nIt is way easier than manually doing everything.
403991
Cleaning out the recycle bin permanently deletes files that you no longer use. While in the bin, they can be retrieved, but once   the bin is emptied, they are gone.\n\nWhat good does it do? It opens up space on your hard drive, eliminating the computer's need to "carry" the files. If you have a lot in it, your computer will actually run faster and more efficiently. \n.
183374
Once in a month. Moreover u should defrag only when u r recommended to do that. Before defraging, u should analyze the drives.
648854
i always defrag even if it says that sometimes i do it more than once, defragging is just like cleaning up a messy desk with papers from one file here and others over there, it puts them all back into order in the nearest space or group avail
79964
Maybe there is something wrong with your CD drive, or your drive is dirty.
51420
in brief - to get rid of the useless loading of apps and processes that are no longer there. cleaning it speeds up your system.