Motorola Droid Bionic :: GPS - Poor Reception Since Leap Second?

I have a Bionic, stock .905 software. Among other things, I make extensive use of the GPS, which until recently was excellent - even post-905 it was extremely accurate, locked almost instantly, etc.Since approximately the leap second (correlation does not not necessarily imply causation, but it's not a bad first guess), GPS has been problematic - much slower locks, longer to get an accurate fix, and fewer satellites (GPS Status often shows 3 or 4 locked, when before it would show at least 8 or 9 locked)When using navigation, it used to lock within a few seconds. Now I'm often driving a mile or two before I have a lock, but once I have a lock, it's working fine. I've tried clearing the cache, re-seating the SIM, multiple power-off and power-on cycles, and verifying that I have the absolute latest AGPS data. I could try a warranty replacement, but there's no point if this is a known issue, especially given the hit-or-miss nature of Verizon's refurbished phones.