Okay, that was plain weird. I'm sitting at my PC 15 mins ago, and the chair I sit in moved back and then forth sharply with a dull rumbling sound. I jumped up immediately, and felt a duller motion then as I walked down the hallway it sounded like a huge storm was rattling the door. I got to the door, It was literally shaking in the frame and the rumbling noise lasted about another 5-10 secs. Then it all kinda calmed down. There's no storm in my area atm, and I'm kinda thinking it was a mild tremor of some kind. It freaked me out totally. Nothing seems affected, PC didn't flinch, nor did the lights. I certainly didn't imagine it, does this sound like a tremor to any of you? I know a lot of you live on the West Coast US. I guess you're familiar with tremors and the like. Is this normal? Seems real weird , I've never experienced anything like it. I live smack bang in the middle of England (Northamptonshire) and it's not an area known for earthquakes lol. Any ideas to what this might have been if not a tremor, and no before anyone asks I'm sitting here both sober and straight.