On the day of the launch of its Windows 2000 operating system, Microsoft is disputing suggestions in a leaked company memo that the product contains an amazing 63,000 bugs.

Keith White, director of Windows marketing at Microsoft, doesn't dispute the authenticity of the memo sent by Windows development leader Marc Lucovsky.

An excerpt from the memo reads in part, "Our customers do not want us to sell them products with over 63,000 potential defects. They want those defects corrected. How many of you would spend $500 on a piece of software with over 63,000 potential known defects?"

White insisted that the Windows 2000 code has been extensively vetted by 750,000 beta testers and security analysts for potential bugs and asserted that "the claims are taken out of context and completely inaccurate."

Motivation memo According to White, the memo was intended as a "motivational statement" for the Windows development team based on an automated scan of the source code with a tool called Prefix. He said the analysis flagged code in Windows 2000 that could be made more efficient in the next release, detected false positives and analyzed 10 million lines of test code that weren't included in the release.

White likened running Prefix on code in Microsoft's Raid development database to running a grammar-check tool on F. Scott Fitzgerald's classic 'The Great Gatsby' — the tool may underline unfamiliar words but doesn't change the content of the novel. "Our customers, analysts and technical reviewers say this product is rock solid," said White. "This is the most reliable version of Windows ever."