Invulnerability Bug?

[Addihul]

I was soling yesterdays hard mode dailies when half way through I realize I hadn't seen my health bar go down.. not even once. I think somewhere at the beginning I did but later on I hadn't popped a single medpack or overheal. I went and tested it. I sniped out in the open and got ram rolled by 3-4 NPCs from a distance. No health went down, not even a sliver. A few minutes later I wanted to test it further so I stood right in front of a couple guys. Eventually, within about 10 seconds or so my health started to go down and I died pretty quickly. I've never seen that happen before and I have absolutely NO idea how it happened. Anyone seen this?

 

[Xeromaus]

I'd blame some type of lag (though I've never seen it do that). Aside from that, maybe you were holding overheal?

 

[Addihul]

I did a couple Falcons last night and I was lagging like a beast for the first half of it. Shots took seconds to register, I'd be standing there and nothing would happen. It's quite possible. Hrmm..