Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.601
diff -u -F^f -r1.601 common.inc
--- includes/common.inc	12 Dec 2006 06:13:34 -0000	1.601
+++ includes/common.inc	13 Dec 2006 14:09:00 -0000
@@ -1490,7 +1490,7 @@ function drupal_build_css_cache($types, 
           // Fix all paths within this CSS file, ignoring absolute paths.
           $contents = preg_replace('/url\(([\'"]?)(?![a-z]+:)/i', 'url(\1'. $path . '\2', $contents);
           // Fix any @import that don't use url() and is not absoslute.
-          $data .= preg_replace('/@import\s*([\'"]?)(?![a-z]+:)/i', '@import \1'. $path . '\2', $contents);
+          $data .= preg_replace('/@import\s*([\'"]+)(?![a-z]+:)/i', '@import \1'. $path . '\2', $contents);
         }
       }
     }