What's your approximately time for one WorkUnit?
What platform do you use?
What CPU/Mainboard?
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My timeings @ AMD AthlonXP 1700+ (Thoreughbred B)
O/C to FSB 190MHz x 10.5 on ABIT KD7 Mainboard.
(Windows Server 2003 Enterprise Edition)

About 2:20 (some up to 3h)?
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What's yours experience?