Non IE browser tracks



Yes,I know I should really be using "NoTrax",but at the moment I mainly use Firefox.In the case of Firefox,the only four tracks it leaves as for as I know are cookies,cache,history and downloads-which also makes it ideal to set up with Eraser.Unlike some others we could mention! Excluding actually downloading files into the Windows system(with the obvious security implications from then on),does Windows log any use of activities outside(but from) a browser such as Firefox,say in files that might be hidden? The same question might apply to Mozilla or Opera.
I`d hate to think I carefully avoided IE for all this time,and cleaned up after myself so to speak,when the Windows OS might be quietly logging my, albeit harmless, activity elswhere!