iOS 4.3 Update Borking iPod Touch Devices
If you own an iPod touch, you might want to wait a bit before updating to iOS 4.3. Some users who applied the update are reporting graphical glitches, such as artifacts on the lock screen, as well as unlocking taking a bit longer to work. The quirky behavior seems to be mostly affecting owners of fourth generation iPod touch models.
"Since I've installed iOS 4.3, my iPod touch 4 (only about 8 months old and perfect condition) has been acting strange... For example, when my iPod is locked, on the locked screen on the top (menu bar) the lock icon becomes snowy/glitchy. I've had this happen when notifications pop up," a user on Apple's support forum complains.
The user quoted above posted a YouTube video, which shows his iPod touch wigging out. He's far from the only one complaining about such behavior, however, as there's another thread on Apple's support forum (here) where users make similar complaints.