There does seem to be something up with NPCs ramming in Combat Zones, at least I assume I was rammed.
I hadn't died through combat with NPCs since the game launched, yet within 15 minutes of joining a Combat Zone my Asp with full class 6 shields simply insta-explodes, I didn't even see what caused it.
I come back, this time there aren't even any hostiles about, moments later; boom! Once again, I didn't see anything near me. Admittedly, in neither case did I have more than 1-2 pips in shields at the time, but that was because in the first instance I was not at risk of taking fire, and the second there were no hostiles.
I have a TrackIR, and a couple thousand kills in Combat Zones since the PB, so regardless of my skills at dodging, I do usually have some situational awareness.
PS: Off to a nice cosy Anarchy to shoot at Elite Anacondas and players, it's much safer.
PPS: In before someone posts a 'should have gone to Specsavers' gif, or somesuch.