I came here to raise my hand for the "who else"-vote. I just had two bluescreens in a row after having played two days without any. Yes, I do have a X-Fi card too.
I searched a little and found out the latest beta driver for the X-Fi series cards is dated Dec. 11. To find and download it,
go to http://support.creative.com/welcome.aspx
select "Soundblaster"
next select "Sound Blaster X-Fi Titanium" (third row, last column)
now here's the tricky part which made me think a lil howto might be neccessary:
scroll down to the bottom of the page and use the manual selection-option to specify language: English (searched for German first, but those drivers there are about for month older), specify your OS and finally, specify that you want to see BETA drivers.
I have not found any other possibility to find those drivers, so... that's where they are hidden.