[Unsolved]polyphony problems:(!

[ManBoy]

Hi! i`m new memeber here,and i must say that this site rocks!
ok..i have just bought virus c indigo2 and i have this problem:
Let say, i have recorded 4tracks to my sequencer(cubase 5.1,cubase sx or
logic platinium) bass drum, bass, synth pad, and some arp leads;all
this takes polyphony 14notes(i have counted unision notes) all right...
then i started record another track (instrument - airMonix) that have
a long sustain, but when i played a note,sustain stopped right away, when
i stoped playback;note in played correctly.i try this with many other instruments; same thing;pads didnt sound correctly, they kind of stopped
suddenly! what`s wrong?? please somebody help me!

Janne Jokisalo -finland-