I’d love to think so, but I was actually alerted to the problem on both occasions by people I know personally trying to comment, as it was their comments that were truncated and incorrectly displayed in the Dashboard.
I saw your test comment – worked fine. I’m in contact with the person who had it go wrong most recently, in the off chance that they might have actually just entered their comment in the wrong field – though that seems unlikely considering they’re web-savvy and you’ve managed to find it with the minimum of fuss.