What Kind of Management Does This?

Already Mired in Sales Slump, Gap Closes Two Most Popular Internet Stores

Both Gap.com and OldNavy.com have been closed for the past week, driving frustrated shoppers like Kira Storch of San Francisco to other Web sites to buy clothes.
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Hoping to minimize the customer inconvenience, Gap waited until after most back-to-school shopping had been finished before launching a "soup-to-nuts" overhaul of its major e-commerce sites, said company spokeswoman Kris Marubio. She said the changes were too complex to enable the site to continue running.

What? What? Ok, I don't know what they have to deal with but still this strikes me as crazy. It baffles me that they think it is acceptable to go offline for days to make a change, even a major one.