Hi there! Thanks for the welcome
So, what i mean is quite what you're sayng, azra, but what it's wrong to me is that i'm not trying to open a file like .odt or .torrent, i'm simply asking firefox to open the folder where it downloaded it.
I've checked the "file association" panel", but i think it's not what i'm in need of: as i said, it's not a "open file" problem, but an "open folder containing the file" one.
And Kde is still asking me of the compiz-icon, even if compizfusion is no longer installed (nor the compiz-icon itself).
Thank you for the help, though! ^^
p.s.: ok, i've got news: firefox doesn't allow me to open ANYTHING, it always asks me what program i would use, even if it's a .pdf! Furthermore, it's doesn't list the available programs, it just gives me the "choose program" option O_o And when i click it, it appears, in a Kde enviroment, a gnome interface, weird enough...
I know i'm adding problems to problems, sorry!