Mixed fleet flying (MFF) is being done in QR, but only by instructors.
They can fly A330/A340 or A330/A320.
In general it is said that MFF for the mainline pilots (Not instructor astronauts heheheh) will only be profitable if both fleet sizes are more or less the same. Tinitin pointed it out earlier allready, it has to do with staying current on both machines.
Since QR has 29 A330s and only 5 A340s, it makes no sense to qualify all the pilots on both airplanes. Same goes for A330 vs A320.
Hope this helps...
Regarding Annual leave...what did you expect my friend? We have NO management at the moment and we have NO designated rostering manager! Who would take a decision like that now, while nobody knows what/who the new management is going to be(like)...
Bad luck for those of us who have requested leave in jan/feb 2008!
As usual, scramble like measures will be taken soon.....
WHAT A COMPANY!