Well this one certainly slipped under the radar (07/2008 Audigy 2 ZS Notebook Driver)

EDIT: DO NOT USE THIS DRIVER. MANY AUDIGY 2 XS NOTEBOOK USERS (INCLUDING MYSELF) ARE HAVING PROBLEMS WITH THIS DRIVER. DO NOT USE.

Dated July 18, 2008, and covers XP, XP64, Vista32, and Vista64.

You have to click "Support," then the tiny blue link that says your product isn't listed on the page of still-loved products and search the old-fashioned way.

Changelog:

Fixes:

* Resolves issues of intermittent and random application/system crash when playing games or running applications that use EAX®, DirectSound®, OpenAL and/or ASIO features.
* Resolves issue of system crash when running DTM - Device Path Exerciser test in Windows Vista 64-bit.
* Resolves issue of volume mapping leading to very soft volume level in systems using Windows Vista with Service Pack 1.
* Resolves issue with distortion and noise occuring in systems with 4 GB of RAM or greater.
* Resolves issue with OpenAL playback of multichannel formats.
* Resolves issue of system crash when performing immediate system shutdown after exiting Battlefield 2.
* Optimizations to OpenAL to improve performance in Unreal Tournament 3, DiRT, and other games.

Known Issues:

* Applications from the original Sound Blaster Audigy CD will not work with this download on Windows Vista.
* Users are advised to use Audio Console included in this download to change speaker configurations.
* Gameport is not supported in Windows Vista and Windows XP Professional x64 Edition.
* 6.1 speaker mode is not supported by Windows Vista.

Only reason I posted it here is most XPS Gen 2 and M170 users still use the Audigy 2 ZS. This is NOT the one most people would use with the 1730, Saif. You need an ExpressCard to PCMCIA adapter to use this card with an M1730.

Fair warning for those who still do - I could not get these drivers to work on my system. This could be because my sound card finally decided to give up the ghost and the plastic was cracked on one side and the top wouldn't stay on, but it wouldn't work with the trusty OpenAL betas from '06, either. So beware.

A good number of people have now reported this driver is messing them up as well, so DO NOT USE it.