Since I'm relatively new to GA, I'm not sure how serious or not this issue is. I had ~100 visits yesterday, which was visible until today (few hours ago) - instead of ~100, now I see 0... This disappearing of visits happened to me few times this month, but every time I restart Opera and reopen GA, it got back to normal. This time this isn't the case - I even tried Chrome's ingognito window, and count for yesterday is still big fat 0. Does this kind of stuff happens to anybody else? And how serious this issue is - anybody had the case that disappeared data never came back?
^ It's ok now - mysteriously disappeared data just got back. Question still stands - share any "interesting" experiences regarding this.