Statement of Shuttle support:

BIOS revision history noting dual-core was added in rev.K:

If you have a Shuttle SN25P equipped with an AMD Athlon 64 X2 processor running Windows XP and are experiencing hangs, especially during periods of high-speed USB2 activity, AND running in USB 1.1-only or single-core (/onecpu in boot.ini) modes clears up the problem, please contact Shuttle if you haven't done so already and get a case number assigned to your problem. The front line techs are sympathetic, but to back them up, we end-users need to raise the visibility of this particular problem to Shuttle management.

US: +1-626-820-9000
Germany: +49-4121-476860
Japan: +03-3625-4940
Global: +886-2-8792-6168


Office of the President
Shuttle Computer Group Inc.
17068 Evergreen Place
City of Industry, CA 91745

Office of the President
Shuttle Computer Handels GES. M.B.H.
Fritz-Strassmann Str. 5
D-25337 Elmshorn, Germany

Office of the President
Japan Shuttle Co., Ltd.
No. 201, Hirose Building, 2-3-13
Taihei Sumida-Ku Tokyo 130-0012 Japan

Office of the President
Shuttle Inc.
NO. 30, Lane 76, Rei Kuang Rd.
Nei-Hu Dist., Taipei, Taiwan

Please join several of us that are experiencing this problem here if you're interested: