The beta of the next version of Apple's iOS is reportedly causing the original iPad to overheat.
Apple announced iOS 5 last month, but the full version won't be released until later this year. However, a beta can be downloaded by developers registered with Apple.
A PC Pro reader told us his first-generation iPad overheated after installing iOS 5, "to the point where it was almost burning".
He claimed the screen reached a temperature of 65 degrees centigrade - despite being turned off - and the Wi-Fi chip stopped working.
He was told by staff at the Apple Store in London's Regent Street that it was a "known issue" with first-generation iPads running the iOS 5 beta.
"I'm extremely concerned this is apparently a known issue and yet the iOS 5 download is still available," the reader said.
The Apple Store initially refused to replace the developer's iPad, citing the terms and conditions attached to its beta software, before finally agreeing to provide a replacement and £60 ($89) of vouchers for the App Store in compensation.
Developers who access Apple's beta software must agree to a non-disclosure agreement, however a blogger reported five days after the launch that the iOS 5 beta was causing the iPhone to overheat.
Apple declined to comment on this story.