QUOTE(dares @ May 31 2014, 01:06 AM)
Doesn't really matter where it was manufactured, even Fiesta models sold in Europe and the US have this problem.
The symptoms is severe clutch slippage (juddering) and if you look under the car and check the gearbox, you will see oil at the seams

That is the clutch housing, the clutch slippage is due to transmission fluid leaking into the clutch housing and contaminating the clutch pads. The fluids then leak out of the seams where the clutch housing meet the gearbox housing.
The above image have very light leakage only. In serious cases, you will see big patches of oil along the seams.
Ok, so the severe judders/jerks are the symptoms of the transmission fluid leakage of the gearbox. Currently I don't experience this in my Focus, though the 5 years warranty would have covered for this defect I presume, unless the leakage tend to come up after the warranty period.
The place where the vehicle was manufactured may matter although models in other countries show this problem. Since you mentioned the later batches of Fiestas do not exhibit this problem anymore, Ford may have improved some of the mechanism of the later batches of the Fiestas to rectify the problems that plague the earlier Fiesta models. In the case of the Focus, we won't know if the mechanical parts of the gearbox of the Focus models coming out from the Thailand factory are exactly the same as the Focus models that the Taiwanese are getting. I believe there will be differences, though not major, with car models produced from countries in different regions.