On the debut weekend the iPad 2 went on sale, Apple may have sold as many as 500,000 of the devices, reports Bloomberg, citing an estimate from Piper Jaffray Cos. analyst Gene Munster.

Munster’s team contacted stores run by Apple, Target and Best Buy, which said they had sold out of the device, the story notes. Apple’s online store is reporting a month-long delay for delivery of the devices, compared with less than a week when sales began, the story notes.

By comparison, Apple sold more than 300,000 of the first iPad within the first 24 hours of its debut in April, according to the article. Munster estimated that Apple will likely exceed his forecast of selling 5.5 million iPads this quarter, which ends this month.

Separately, two aspiring filmmakes have already edited a short film only using an iPad2 with the tablet version of iMovies, according to CNET.

According to the CNET story, "first ran into Anna Elizabeth James and Michael Koerbel, the aspiring movie-industry duo of Majek Pictures, through the short film "Apple of My Eye" recorded and edited last year entirely on an iPhone 4.Since last June, the team has been busy. They’ve since produced eight installments of similarly produced action series called Goldilocks and an app that lets people download new episodes. And starting Friday, they upgraded their editing studio: two iPad 2s running Apple’s new tablet version of iMovie were used to produce Goldilocks episode nine."

The story continues, "Majek Pictures bought two iPad 2s within the first hour after they went on sale, one for James and one for Fawaz Al-Matrouk, the team’s Goldilocks editor. They had the video imported, edited, and posted Saturday after a 35-hour sleepless rush."

Here’s the "Goldilocks" episode edited solely on the iPad2:

First iPad 2 Movie – Goldilocks from Majek Pictures on Vimeo.