diff --git a/wp-admin/includes/class-wp-plugin-install-list-table.php b/wp-admin/includes/class-wp-plugin-install-list-table.php
index 9335e96ba..64a1ea7cc 100644
--- a/wp-admin/includes/class-wp-plugin-install-list-table.php
+++ b/wp-admin/includes/class-wp-plugin-install-list-table.php
@@ -217,7 +217,7 @@ class WP_Plugin_Install_List_Table extends WP_List_Table {
 			<td class="vers column-version"<?php echo $style['version']; ?>><?php echo $version; ?></td>
 			<td class="vers column-rating"<?php echo $style['rating']; ?>>
 				<div class="star-holder" title="<?php printf( _n( '(based on %s rating)', '(based on %s ratings)', $plugin['num_ratings'] ), number_format_i18n( $plugin['num_ratings'] ) ) ?>">
-					<div class="star star-rating" style="width: <?php echo esc_attr( $plugin['rating'] ) ?>px"></div>
+					<div class="star star-rating" style="width: <?php echo esc_attr( str_replace( ',', '.', $plugin['rating'] ) ); ?>px"></div>
 					<?php
 						$color = get_user_option('admin_color');
 						if ( empty($color) || 'fresh' == $color )
diff --git a/wp-admin/includes/plugin-install.php b/wp-admin/includes/plugin-install.php
index 442b35cde..25cd76ca2 100644
--- a/wp-admin/includes/plugin-install.php
+++ b/wp-admin/includes/plugin-install.php
@@ -342,7 +342,7 @@ function install_plugin_information() {
 		<?php if ( ! empty($api->rating) ) : ?>
 		<h2><?php _e('Average Rating') ?></h2>
 		<div class="star-holder" title="<?php printf(_n('(based on %s rating)', '(based on %s ratings)', $api->num_ratings), number_format_i18n($api->num_ratings)); ?>">
-			<div class="star star-rating" style="width: <?php echo esc_attr($api->rating) ?>px"></div>
+			<div class="star star-rating" style="width: <?php echo esc_attr( str_replace( ',', '.', $api->rating ) ); ?>px"></div>
 			<div class="star star5"><img src="<?php echo admin_url('images/star.png?v=20110615'); ?>" alt="<?php esc_attr_e('5 stars') ?>" /></div>
 			<div class="star star4"><img src="<?php echo admin_url('images/star.png?v=20110615'); ?>" alt="<?php esc_attr_e('4 stars') ?>" /></div>
 			<div class="star star3"><img src="<?php echo admin_url('images/star.png?v=20110615'); ?>" alt="<?php esc_attr_e('3 stars') ?>" /></div>
diff --git a/wp-includes/category-template.php b/wp-includes/category-template.php
index 9062cffa5..2e23f8a3f 100644
--- a/wp-includes/category-template.php
+++ b/wp-includes/category-template.php
@@ -672,7 +672,7 @@ function wp_generate_tag_cloud( $tags, $args = '' ) {
 		$tag_id = isset($tags[ $key ]->id) ? $tags[ $key ]->id : $key;
 		$tag_name = $tags[ $key ]->name;
 		$a[] = "<a href='$tag_link' class='tag-link-$tag_id' title='" . esc_attr( call_user_func( $topic_count_text_callback, $real_count ) ) . "' style='font-size: " .
-			( $smallest + ( ( $count - $min_count ) * $font_step ) )
+			str_replace( ',', '.', ( $smallest + ( ( $count - $min_count ) * $font_step ) ) )
 			. "$unit;'>$tag_name</a>";
 	}