At 00:41 EST Thursday 9/15 I got stopped out of a long AUD/JPY at 78.107. My stop was at 78.10 and according to my charts the low for that bar was 78.1125. Nothing much was going on at the time and that was the only pair close to getting stopped out so that was all I was watching. My IB chart had a line on it where my stop was, and of couse I knew 10 was where my stop would get triggered since I am configured to stop based on last. Later that afternoon I called them and they said the stop was at 78.12. It was a busy day so I just let it go. It was a moot point anyway since I would have gotten stopped out a few hours later anyway, but I know where my stop was. I've traded with IB for years, but I am new to forex. Anybody know if there is an explanation for this? I have no record of my stop as far as I know.