Ehh, let's see, it's been a few months, so not exactly sure on all the details. I would know if it was happening again, let me try to explain in more depth.
Hmm, another PC is using the same ip address as you? Either someone tapping your connection to gain access, or, who knows what else it could be. On the less paranoid side maybe a ISP error, where they could have double assigned your ip, ie, giving it to someone else. If your internet goes down immediately afterward I would suspect something malicious, but might not.
In my case, I would click to go somewhere, or enter a url, and a lot of the times, especially on 'borderline' sites like this and shroomery, I would get a connection error message, and I'd get a white screen with a choice to continue or cancel. At first I just ignored it and continued. Then over the days I realized this message never came up on 'normal' news and blog websites.
The first day that I had spice I met a new person in my neighborhood, he was bouncing a basketball. Next thing I know we are discussing the pros of psychedelics and I think nothing of it. The very next day we hung out a few hours (and we traded some drugs), and that night I started becoming very suspicious. Some inconsistencies in his manner, his background. I called him out about it, asked him if he was LE, and he said no. I ended up walking away telling myself "no, no no no" shit. I knew something was bad.
Back at home I reviewed myself and my actions. Realized that maybe the weird messages I had gotten on the internet had something to do with his showing up. I ran around these sites, and kept getting sent to these blank pages asking me to click to continue. If you watch your bottom 'loading' bar, that says 'Done' on a still page, it cycles all kind of shit up when you cruise on some sites, like java ads or cookies or whatever. Well I noticed this one ip (7 digit number?) kept showing up. I just happened to randomly search for 'reverse ip lookup', and in a matter of minutes had found a free service. The ip went back to scranton penn. I am under the impression that they have continuing ed for LE up there. The person I met had a mixed background there.
What's bothersome about this is 2 things, one, I believe my street might have been setup for this before hand, as in, they were rewiring a lot of the cable, and I had sources telling me that it had become common to see 4+ squad cars leaving back of street at 4-5am. The other is that I was not talking a bunch of shit, no sales, no trades, just reading STB teks and looking at suppliers. I ordered 1kg. I'm not sure what caught their attention.
If I were you I'd just call my service provider and explain to them what is happening. I tried when I had my problem, and they couldn't say a lot.
At the very least do use Tor, it can help, with even one layer of protection.
edit: you might think I'm paranoid, I could list all the signs that set this guy apart, but the fact is, after one day, I was caught in a web of wtf's about this person, his behavior, and what occured. I got very lucky. Too stupid to think for myself up front, every spid-ey sense rang that night, as he made probably many rookie mistakes. I'm safe for now, hopefully it will stay that way.
And of course, the above was likely dreamed up like so many other parts of my life here.
My ego is insane, but I'm alright
The path of excess leads to the palace of wisdom. -William Blake
Lavos is a fictional character, a dream inside a dream. Don't take what he says to be true or representational of reality in any known form. He is inspired by pure fantasy.