HTML Files Disappearing

[Munch]

I have a problem which started about a couple of months ago, but found no answer.

Whenever I save a file on my hard drive as a HTML file, it will just vanish. The icon may appear for a second but it'll go again. It started when I did some work on a new site while in college as I had no other work to do. I saved the files to a flash drive when I was finished working on it in college.

When I got home and put the files on my hard drive, the icon of the file transferring just vanished. I tried again and still had no luck. I tried renaming the file (on the flash drive) and it still vanished. I then tried loading the file with Macromedia Dreamweaver and saved it on the hard drive. It vanished again.

I have tried doing the above mentioned tests in another folder and the result was the same. I then tried renaming the file while it is still there, visible, but then it tells me the file cannot be found (meaning the file isn't really there).

I have tried restarting the computer and I still have the problem. This is also only affecting HTML files, other file extensions such as PHP are fine.

I am currently using Vista (temporarily until I get W7) though I have not long had it installed.

Does anyone have any experience with this? Any idea how I'd be able to solve it? And yes, I have looked on Google, so you don't need to post any lmgtfy links.