My program used to crash after a few thousand iterations. Now that I've downloaded the latest service pack from MS, it no longer crashes, but system performance is very slow. The same vi runs for days on a win2000 machine!
I have not had any problems using this hardware on XP. Are you
communicating with all 8 ports? Are you doing any data logging or
appending to arrays in the program? And how large is the overall
application? We will need more information to see what is going
on in this particular case.