It seems that the iPad 2 is either sold extremely well, or Apple wasn’t well prepared enough for the fame of its product. Shipping times continue to increase, with people who placed orders this weekend waiting for the products to ship in 3 to 4 weeks.

iPad 2 demand was incredibly strong in the first 24 hours of availability, so Apple had to push shipping time estimates once or twice till now. Initial orders in the online stores were shipped as soon as Saturday, for March 17th as the delivery date, but you’re in for a longer wait if you order right now.

Initial orders should have been delivered in 2-3 days, but this was pushed to 2 to 3 weeks, as orders continued to poor in. Many retail locations have already run out of the iPad 2 on Friday evening, having sold out their stocks. Analysts claim that the Cupertino giant could sell over 500k units on the first weekend, beating the previous generation of tablets.