Our company received the following from Honeywell. (Not verbatim) Coding of certain non-precision approach (NPA) procedures within the A340 FM navigation database could result in an unanticipated vertical profile construction. Specifically NPA's with the MAP beyond the runway could result in the constructed FM vertical profile passing the FAF BELOW the Jeppesen published FAF altitude.
Known NPA procedures which are affected are HSSS VOR 18, VABB VOR 27, YMML VOR 34, FMEE VOR 30. Because 3 of the four are destinations in our airline, and the remaining one an enroute alternate our company has also made it SOP to do all NPA's in selected mode. Guess they are erring on the safe side.
The A340 FCOM 3 also has background info which elaborates a little more on the subject. FCOM 3: BULLETIN #12/1 dated OCT/00.
Personally I have had no problem with the use of the TRACK/FPA during these procedures even in high varying cross wind conditions. Admittedly it does increase pilot workload.