yes of the soundcard.
REASON: Often the hardware is on a shelf (X) period of time in a shop, meanwhile the manufacturer has made a few modifications and upgrades which you can download from their site, these will not necesarily be on the instalation CD with the soundcard as that is a physical CD if you get me !
I always check their website to see if there is a more updated driver than what came in the box ! Sometimes it makes a difference, sometimes not, but worth a try.
Ofcourse, checking what everybody else is saying will also help detect the problem.