I'm now runing XP & Vista as a dual boot on my system. I've encountered a problem with sound with Vista. Music for example plays fine for about 1 minute and then the quality degrades completely. Other users have reported that it sounds like it's playing underwater.
I'm using Creative's latest driver SBAX_PCDVTBETA_US_2_12_0001 so am unaware of anything else I can try.
If I find a solution I will post back here. If anyone else has a similar problem or knows of a solution I'd be pleased to hear from you.