gajim.png should be 48x48 and not 32x32
because if user wants shortcut in his GNOME Desktop (or whatever) it's too small compared with other, and it's not a problem to have 48x48 and ship it for 32x32 (autoresizing happens)
we could also see a possibility of using SVG and fallback to PNGs for windoz
func like
get_gajim_icon()
etc
but that is already ticketed not by me