Index: wp-content/themes/twentyeleven/style.css
===================================================================
--- wp-content/themes/twentyeleven/style.css	(revision 23056)
+++ wp-content/themes/twentyeleven/style.css	(working copy)
@@ -1982,9 +1982,7 @@
 }
 .commentlist .children li.comment .comment-content {
 	margin: 1.625em 0 0;
-	-ms-word-break: break-all;
-	word-break: break-all;
-	word-break: break-word;
+	word-wrap: break-word;
 	-webkit-hyphens: auto;
 	-moz-hyphens: auto;
 	hyphens: auto;