If you use BlogCFC, please edit your style sheets so that the code style adds "courier new" to the list of fonts and changes the size to 1em. For a while now I've been wondering why code blocks were small on BlogCFC sites, but only on my Mac. I want to thank Chris Jordan for sending me the fix and sharing it on the cfbloggers listserv.
Oops, forgot to paste the final code:
font-family: "courier new",courier,monospace;
border: solid thin #0000cc;
padding: 4px 4px 4px 4px;
margin:5px 0 5px 0;