Seems a little strange. In Safari, a right (control) click in the browser window should give you a contextual menu with an "inspect element" option. Use it to inspect a piece of text with the shadow, and look at the Styles column in the inspector to see where the shadow might be coming from.
> I used the "inspect element" feature in Safari and got the
> following...
>
> <textarea id="textarea" wrap="soft"
> onchange="editArea.execCommand("onchange");"
> onfocus="javascript:editArea.textareaFocused=true;"
> onblur="javascript:editArea.textareaFocused=false;" classname="null
> hidden" class="null hidden" style="font-family: monospace; font-size:
> 10pt; width: 100%; height: 1365px; line-height: 15px; margin-left:
> -3px; "> </textarea>
>
> When I toggle the "margin-left: -3px;" attribute off the shadow goes
> away. Also, the 'find' function in Safari will report twice as many
> matches as there really are...one for the shadow and one for the
> primary text.
>
>
> I look though styles.css but didn't anything that looked like it is
> setting the margin-left. Any thoughts on where else to look? CSS is
> not my strong suite.
>
> Thanks for your help so far...
This seems like very strange code. I also notice that selecting text in the textarea yields visually strange results.