updated 05:20 pm EDT, Tue March 15, 2011
Only some interface elements affected
Some iPod touch owners have been suffering graphic glitches since the introduction of the iOS 4.3 update, talk on Apple's support forums reveals, backed up experiences at MacNN. Affected people will see "snowy," corrupted and/or blinking graphics appear in the iOS interface. Making the bug especially odd is that it only affects some portions of the interface, such as status icons and pop-up notifications. It is also inconsistent, showing at some times but not others.
There is so far no solution to the problem. Rebooting a Touch, tapping the screen or pressing the Sleep or Home buttons several times may potentially eliminate glitches, but only temporarily. Restoring a device appears to have no permanent impact, at least long as the backup is still based on iOS 4.3.