Firefox adding gaps between text and images

Is there any reason why Firefox is adding gaps between the text and the dividers in the testimonials section of this page http://www.paulodeon.com/jmi/ IE seems to be fine with it and does not display any gaps.

Here is the relevant CSS

.testimonials {
	font-family: Verdana, Tahoma, Arial, Helvetica, sans-serif;
	font-size:12px;
	background-color:#0F0;
}

.testimonials p {
	margin:0;
	border:0px none;
	padding:0;
}
.testimonials img {
	margin:0;
	border:0px none;
	padding:0;
	background-color:#0F0;
	display: inline;
}