Nepomuk wrote on Dec 3^rd, 2009 at 7:49pm:

Hi! I can´t confirm the autothottle issue. I made a flight from EDDF to LEIB this evening with everything working as it should. Greetings Nepo

What operating system and FSX version are you using?  I am on Vista 32-bit with FSX Acceleration SP2.  I have duplicated this issue two times in a row, and I didn't have this problem with v4.3, so I don't think it is user error.