IPAdownloads was any discussion for how the device enables juvenile and immature behavior to go high tech.But thenAppleunveils second-quarter profits of $1.21bn (£822m) and $8.16bn in sales – way ahead of Wall Street expectations.And this despite the fact that sales of the company’s desktop and notebook computers were down by 3% – which could be a reflection of general economic conditions, or of the growing popularity of netbooks, a product-genre that Apple executives currently affect to despise. (So stay tuned for Download IPAs.)Getting onto the Apple website, though, was not easy. Apple rejected the earlier version of the program called “The Crude Box” which spoofed sounds of female orgasm. That annoyed the budding entrepreneurs, especially considering that the company approved applications with curse words in their titles. Songs and videos with that material seem to get listed on iTunes with little problem.Lexcycle’s Stanza application enables iPhone users to download content from a selection of over 100,000 books and periodicals in ePub format, an open standard for e-books that Amazon’s Kindle currently does not support.”It’s very early days for ebooks and we believe there is a lot of innovation ahead of us,” said an Amazon spokeswoman. “Lexcycle is a smart, innovative company and we look forward to working with them to innovate on behalf of readers.”It was not clear how much Amazon paid for Lexcycle, a year-old company with offices in Austin, Texas and Portland, Oregon. The company said more than one million iPhone and iPod Touch users had downloaded Stanza at the end of 2008.So what’s behind Apple’s rosy numbers?Answer: its new mobile phone business. Sales of theiPhoneIPA doubled to 3.79m units from the same quarter last year, a development that also helped its US network partner, AT&T, which saw its profits dip less than expected because of all those new iPhone subscribers.