This is a big one, folks. The DL09 maintenance update that was recently pushed to the Samsung Fascinate breaks emergency calling -- for some of us, anyway -- when the phone is using a pattern lock. Discovered by SEAKevin from the Android Central Forums, the bug relates to the Emergency Call button when the pattern lock is enabled. Normally, when that button is pressed, the system will allow for E911 calls you having to unlock the phone. We are able to successfully reproduce the bug. 

Instead of being taken to the emergency dialer screen, nothing happens. The dialer only shows after the correct unlock pattern has been entered -- completely defeating the purpose. 

A couple of you are noting in the comments that you're not seeing this, so there might be some variables involved. But the fact that it's happening for anyone certainly is cause for some concern. Video of the bug is after the break. [Android Central Forums] Thanks, SEAKevin!