Audio problems with iPhone after iOS 4.3 update-Bug in iOS 4.3

After updating my iPhone to iOS 4.3, certain iPhone apps that use audio, such as Bloom, Euphonics and others, started having problems with audio: some extremely annoying, frequent audible clicks (when the audio is played trough the speaker or headphones). The Apple iPod app for iPhone seems unaffected by this iOS 4.3 bug.
Is this a known bug in iOS 4.3? Or is it a known compatibility break?
A friend of mine has experienced this problem too after the iOS 4.3 update.
If this is a known bug in iOS 4.3, can this be fixed as soon as possible, as the affected audio apps are effectively unusable due to this annoying problem?
3GS iOS 4 iOS 4.3