Users of Intuit's TurboTax income tax preparation software are up in arms as a result of new DRM features which were added, with no warning, to this year's product.

According to media reports, the company has incorporated a "product activation" feature, similar to those used by Microsoft Office and Microsoft Windows XP, which may prevent the program from being moved from one computer to another. The copy protection scheme, a Macrovision product called SAFECAST or C-Dilla, can also cause problems if hardware is upgraded. Should a user replace his or her hard drive or upgrade to a new computer, he or she may not be allowed to print a return or prepare an amended return.

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