[Chickensoup]

I am not trying to hide anything but I do not like the FB gremlins on my computer pulling ads in the stream that correspond to where I have been on the net. So FB uses my files to cache what I post for pics? HOw would I clear that file from FB. How does FB know to connect up to these files before I sign in?

[Mycroft Holmes]

You need to be using AdBlockPlus, FlashBlock, and Ghostery to make the web useful to you instead of the bozos who write websites.

AdBlockPlus does a pretty good job of eliminating the non-flash ads. FlashBlock keeps you from downloading every idiot flash-based advert when you access a page. Ghostery gives you control over the spyware crap that nearly everybody tries to saddle you with.

If you aren't using at least these things you are experiencing much more grief than you need to.