Always states the same amount of stuff...

Hi there, I have noticed something in CCleaner recently that when I analyse the stuff that needs to be cleaned, it always comes up with 20KB and 4 files for the Mozilla cache. Though I do believe the cache is being emptied, I still find this a nuisance, as I like to know how much stuff is in my cache. I upgraded to the most recent version but it didn't help. Also, it tells me that there's so-and-so many cookies to be deleted, but then it lists it as being 0 KB. Is this because I block 3rd party cookies? Are the cookies actually taking up room? On a similar note, after I last ran it, I viewed the cookies from within Firefox and it still listed all the sites I'd been on. Is this normal?

Thanks

CCleaner is also able to display the cookies in the Options tab / Cookies. Are they still appearing there as well?

After I've cleaned, I think they're all gone when viewed in Options.