Posted 10 April 2006 - 04:33 PM
Windows creates temporary files constantly. Sounds as if you're trying to delete system files. Thumbs database files are there if you have folders set to view thumbnails. It's how Windows keeps track of things. Metafiles are usually to redirect things away from browsers that they cannot handle or display. It's a good idea, methinks, to leave such files be. Go into your explorer window's tools tab, select "Folder Options" and click the "View" tab, and check the radio button to "Do not show hidden files and folders" and "Hide protected operating system files" and don't mess with this stuff unless you're instructed to by a member of the Hijack team. You may have been lucky so far, but one of these days, your operating system is going to refuse to start. I've often had to reload operating systems because someone was deleting system files from the root directory.
Unless you suspect malware, there is no reason to delete files and folders like the ones you mentioned.