I don't know if it's just me, which it might, but the last couple of days whenever I post more text than the default comment-box has space, my "text-box" jumps, every time I type a letter it jumps up and down, so to speak. So I see the line I'm typing at for a second, before it goes back up to the top of the box. Not the cursor, just the space I see.
I've also experienced this. It doesn't do it every time, though.
I'd ask what browser you're using, but then I wouldn't know what to do with the answer, so I dunno!
I'll keep an eye out for it myself.
-Vincent
IE8, for the record.
I also suffer from jumpy box syndrome. I'm using IE8 also. I don't get it on my home computer (Firefox). I seem to be in remission though, because there haven't been any symptoms for the last few days.
Yes, I get that too with IE8.
There's a little compatability view button next to your refresh button that you can use. Problem is, sometimes you hit it then the forge pulls a face at you and says you have an issue. Other times it'll get rid of the jumping.
Onward, progress!