Why does sIFR chop off letters?

Question

What would cause the bottom of characters like p, f, y to be invisible when using sIFR?

Answer 1

line-height is too small? There's some coverage about using line-height correctly with sIFR here.

Answer 2

It's a Flash issue. You can help Flash render things correctly through the tuneHeight/tuneWidth and offsetTop/offsetLeft arguments (sIFR 3).