well i used to use shareaza to handle torrents & i turned that option off & started using Shadows.
theres loads more info, but this doesnt matter cause i dont get it anyway & the GUI sucks
shadows actually dl more/faster than raza & ul less(! but this could also be cause theres more networks+some files raza dls faster because its more available on other networks)
id leave it to you for picking between these 2 (raza wasnt mentioned before)
Bookmarks