diff --git a/min/lib/Minify/CSS/Compressor.php b/min/lib/Minify/CSS/Compressor.php
index 57ccd6a..a348286 100644
--- a/min/lib/Minify/CSS/Compressor.php
+++ b/min/lib/Minify/CSS/Compressor.php
@@ -176,6 +176,7 @@ class Minify_CSS_Compressor {
      */
     protected function _commentCB($m)
     {
+        $hasSurroundingWs = (trim($m[0]) !== $m[1]);
         $m = $m[1]; 
         // $m is the comment content w/o the surrounding tokens, 
         // but the return value will replace the entire comment.
@@ -219,7 +220,11 @@ class Minify_CSS_Compressor {
             $this->_inHack = false;
             return '/**/';
         }
-        return ''; // remove all other comments
+        // Issue 107: if there's any surrounding whitespace, it may be important, so 
+        // replace the comment with a single space
+        return $hasSurroundingWs // remove all other comments
+            ? ' '
+            : '';
     }
     
     /**
diff --git a/min_unit_tests/_test_files/css/comments.css b/min_unit_tests/_test_files/css/comments.css
index bb4eaed..2ef9fac 100644
--- a/min_unit_tests/_test_files/css/comments.css
+++ b/min_unit_tests/_test_files/css/comments.css
@@ -4,3 +4,6 @@
 /*! YUI Compressor style comments are preserved */
 
 /* but all other comments are removed */
+
+/* comments that have any surrounding whitespace are replaced by a single space. */
+body{ background:#fff/*eef*/ url(/path/to/image.gif) repeat-y; }
diff --git a/min_unit_tests/_test_files/css/comments.min.css b/min_unit_tests/_test_files/css/comments.min.css
index daf900f..3ea5c61 100644
--- a/min_unit_tests/_test_files/css/comments.min.css
+++ b/min_unit_tests/_test_files/css/comments.min.css
@@ -1,2 +1,3 @@
 
 /* YUI Compressor style comments are preserved */
+body{background:#fff url(/path/to/image.gif) repeat-y}
\ No newline at end of file
diff --git a/min_unit_tests/_test_files/css/hacks.min.css b/min_unit_tests/_test_files/css/hacks.min.css
index c26cea8..68be2ee 100644
--- a/min_unit_tests/_test_files/css/hacks.min.css
+++ b/min_unit_tests/_test_files/css/hacks.min.css
@@ -1,4 +1,4 @@
-/*\*/a{}.foo{color:red}/**//*\*//*/@import "ie5mac.css";/**//*/*/.foo{display:block}/**//*/*//*/.foo{display:crazy}/**/div{width:140px;width/**/:/**/100px;width:/**/100px}html>/**/body{}div{width:400px;voice-family:"\"}\"";voice-family:inherit;width:300px}div{filter:chroma(color=#aabbcc);filter:mask(color=#000000) shadow(color=#9BAD71, direction=135) chroma(color=#000000)}@media
+/*\*/a{}.foo{color:red}/**/ /*\*//*/@import "ie5mac.css";/**/ /*/*/.foo{display:block}/**/ /*/*//*/.foo{display:crazy}/**/ div{width:140px;width/**/:/**/100px;width:/**/100px}html>/**/body{}div{width:400px;voice-family:"\"}\"";voice-family:inherit;width:300px}div{filter:chroma(color=#aabbcc);filter:mask(color=#000000) shadow(color=#9BAD71, direction=135) chroma(color=#000000)}@media
 screen{/*\*/* html
 div#page{height:1%}/**/}foo{_height:20px;*height:15px}@media
-tty{i{content:"\";/*" "*/}}@import 'midpassafter.css';/*"}}/* */p:first-letter {color:red}p:first-line {color:red}
\ No newline at end of file
+tty{i{content:"\";/*" "*/}}@import 'midpassafter.css';/*"}}/* */ p:first-letter {color:red}p:first-line {color:red}
\ No newline at end of file
diff --git a/min_unit_tests/_test_files/html/before.min.html b/min_unit_tests/_test_files/html/before.min.html
index 550c28a..58ba2bb 100644
--- a/min_unit_tests/_test_files/html/before.min.html
+++ b/min_unit_tests/_test_files/html/before.min.html
@@ -10,7 +10,7 @@ if(is.ua.indexOf('gecko')>=0){is.ie=is.ns=false;is.gecko=true;}</script> <script
 {}/*]]>*/</script> <script type="text/javascript">i=1;</script> <script type="text/javascript">/*<![CDATA[*/(i<1);/*]]>*/</script> <!--[if IE 6]><style type="text/css">/*<![CDATA[*/
 /* copyright: you'll need CDATA for this < & */
 body{background:white}/*]]>*/</style><![endif]--><style type="text/css" title="currentStyle" media="screen">@import "/001/001.css";/*\*/css
-hack{}/**//*/*/css
+hack{}/**/ /*/*/css
 hack{}/**/css
 hack{display/**/:/**/none;display:none}</style><link
 rel="Shortcut Icon"
diff --git a/min_unit_tests/_test_files/html/before2.min.html b/min_unit_tests/_test_files/html/before2.min.html
index 4dee299..ae28465 100644
--- a/min_unit_tests/_test_files/html/before2.min.html
+++ b/min_unit_tests/_test_files/html/before2.min.html
@@ -10,7 +10,7 @@ if(is.ua.indexOf('gecko')>=0){is.ie=is.ns=false;is.gecko=true;}</script> <script
 {}</script> <script type="text/javascript">i=1;</script> <script type="text/javascript">(i<1);</script> <!--[if IE 6]><style type="text/css">
 /* copyright: you'll need CDATA for this < & */
 body{background:white}</style><![endif]--><style type="text/css" title="currentStyle" media="screen">@import "/001/001.css";/*\*/css
-hack{}/**//*/*/css
+hack{}/**/ /*/*/css
 hack{}/**/css
 hack{display/**/:/**/none;display:none}</style><link
 rel="Shortcut Icon"
diff --git a/min_unit_tests/_test_files/minify/minified.css b/min_unit_tests/_test_files/minify/minified.css
index 0c36a5a..200b60f 100644
--- a/min_unit_tests/_test_files/minify/minified.css
+++ b/min_unit_tests/_test_files/minify/minified.css
@@ -2,3 +2,4 @@
 solid #0f7}div#content
 h1+p{padding-top:0;margin-top:0}@media all and (min-width: 640px){#media-queries-1{background-color:#0f0}}@media screen and (max-width: 2000px){#media-queries-2{background-color:#0f0}}
 /* YUI Compressor style comments are preserved */
+body{background:#fff url(/path/to/image.gif) repeat-y}
\ No newline at end of file