iOS 4 Murders iPhone 3G ... but Nobody's Perfect
Apple is looking into reports that its iOS 4 does not run well on older devices such as the iPhone 3G and 3GS. To be sure, Apple has warned from the beginning that not all of the features -- in particular, the multitasking in iOS 4 -- could be supported on older devices. However, owners of those phones have found that upgrading resulted in problems more extreme than the lack of new features.
http://www.macnewsworld.com/rsstory/70520.html
