[bojan]

Alex,
Christian Buil's web page refers to MKII then, see the caption under the first fig on it (f/1.8 Mark II).
What Ash showed us (and what Jeanette indicated as a slight problem) is terrible..
So, if you are right , then there are 3 version of that lens: 1) Ecellent (Mk_I), 2) not so excellent (Mk_II) and 3) a range of Mk_II crappy ones.
Also keep in mind that this (Buil's) test was done with full frame sensor.. at the left-right edges of the frame.
Here, we are comparing those lenses used with smaller frame cameras (400D, 450D, 20d .. am I right, Jeanette?), so the coma in corners should be much better (and it is, in case of my former FD lens, since I do not have to crop at all if using f3.5 or more)
Maybe Mk-I and FD F1.4 are the same lens (optically)? FD is also almost 100% metal (except couple of small plastic parts of iris mechanism inside)