Disappearing letters with text shadow

For my site title, I would like to set a text stroke using the text shadow effect.

Whenever I apply it to my site title like so:

#site-title a {
	letter-spacing: .08em;
	text-shadow: 0 0 2px #000; /* horizontal-offset vertical-offset 'blur' colour */
  -moz-text-shadow: 0 0 2px #000;
  -webkit-text-shadow: 0 0 2px #000;
}

All letters but the first disappear, and that letter is properly stroked with the text shadow.

I have applied this effect to other fonts elsewhere in the page and it works fine.

Any ideas?