Index: wp-admin/css/wp-admin.dev.css
===================================================================
--- wp-admin/css/wp-admin.dev.css	(revision 14804)
+++ wp-admin/css/wp-admin.dev.css	(working copy)
@@ -3752,3 +3752,8 @@
 	padding: 4px 20px 6px;
 	font: italic normal normal 24px/35px Georgia, "Times New Roman", "Bitstream Charter", Times, serif;
 }
+
+/* Scrollbar fix for bulk upgrade iframe */
+body.update-php {
+	height: 98%;
+}
Index: wp-admin/includes/class-wp-upgrader.php
===================================================================
--- wp-admin/includes/class-wp-upgrader.php	(revision 14804)
+++ wp-admin/includes/class-wp-upgrader.php	(working copy)
@@ -466,6 +466,7 @@
 			return false;
 		}
 
+		$this->skin->feedback('bulk_upgrade_start');
 		$this->maintenance_mode(true);
 
 		$results = array();
@@ -507,7 +508,10 @@
 			if ( false === $result )
 				break;
 		} //end foreach $plugins
+
 		$this->maintenance_mode(false);
+		$this->skin->feedback('bulk_upgrade_end');
+		
 		$this->skin->footer();
 
 		// Cleanup our hooks, incase something else does a upgrade on this connection.
@@ -704,6 +708,7 @@
 			return false;
 		}
 
+		$this->skin->feedback('bulk_upgrade_start');
 		$this->maintenance_mode(true);
 
 		$results = array();
@@ -745,7 +750,9 @@
 			if ( false === $result )
 				break;
 		} //end foreach $plugins
+		
 		$this->maintenance_mode(false);
+		$this->skin->feedback('bulk_upgrade_end');
 		$this->skin->footer();
 
 		// Cleanup our hooks, incase something else does a upgrade on this connection.
@@ -1056,9 +1063,11 @@
 	}
 
 	function add_strings() {
+		$this->upgrader->strings['bulk_upgrade_start'] = __('The update process will start now. It may take awhile to finish.');
 		$this->upgrader->strings['skin_update_failed_error'] = __('An error occured while updating %1$s: <strong>%2$s</strong>.');
 		$this->upgrader->strings['skin_update_failed'] = __('The update of %1$s failed.');
 		$this->upgrader->strings['skin_update_successful'] = __('%1$s updated successfully.').' <a onclick="%2$s" href="#" class="hide-if-no-js"><span>'.__('Show Details').'</span><span class="hidden">'.__('Hide Details').'</span>.</a>';
+		$this->upgrader->strings['bulk_upgrade_end'] = __('The update process is complete.');
 	}
 
 	function feedback($string) {
@@ -1103,7 +1112,8 @@
 
 	function before($title = '') {
 		$this->in_loop = true;
-		printf( '<h4>' . $this->upgrader->strings['skin_before_update_header'] . '</h4>',  $title, $this->upgrader->update_current, $this->upgrader->update_count);
+		printf( '<h4>' . $this->upgrader->strings['skin_before_update_header'] . ' <img alt="" src="' . admin_url( 'images/wpspin_light.gif' ) . '" class="hidden waiting-' . $this->upgrader->update_current . '" style="vertical-align:middle;"></h4>',  $title, $this->upgrader->update_current, $this->upgrader->update_count);
+		echo '<script type="text/javascript">jQuery(\'.waiting-' . esc_js($this->upgrader->update_current) . '\').show();</script>';
 		echo '<div class="update-messages hide-if-js" id="progress-' . esc_attr($this->upgrader->update_current) . '"><p>';
 		$this->flush_output();
 	}
@@ -1120,6 +1130,7 @@
 		}
 		if ( !empty($this->result) && !is_wp_error($this->result) ) {
 			echo '<div class="updated"><p>' . sprintf($this->upgrader->strings['skin_update_successful'], $title, 'jQuery(\'#progress-' . esc_js($this->upgrader->update_current) . '\').toggle();jQuery(\'span\', this).toggle(); return false;') . '</p></div>';
+			echo '<script type="text/javascript">jQuery(\'.waiting-' . esc_js($this->upgrader->update_current) . '\').hide();</script>';
 		}
 		$this->reset();
 		$this->flush_output();
Index: wp-admin/update-core.php
===================================================================
--- wp-admin/update-core.php	(revision 14804)
+++ wp-admin/update-core.php	(working copy)
@@ -418,7 +418,7 @@
 	echo '<div class="wrap">';
 	screen_icon('plugins');
 	echo '<h2>' . esc_html__('Update Plugins') . '</h2>';
-	echo "<iframe src='$url' style='width: 100%; height:100%; min-height:850px;'></iframe>";
+	echo "<iframe src='$url' style='width: 100%; height: 100%; min-height: 750px;' frameborder='0'></iframe>";
 	echo '</div>';
 } elseif ( 'do-theme-upgrade' == $action ) {
 	check_admin_referer('upgrade-core');
@@ -441,7 +441,7 @@
 	echo '<div class="wrap">';
 	screen_icon('themes');
 	echo '<h2>' . esc_html__('Update Themes') . '</h2>';
-	echo "<iframe src='$url' style='width: 100%; height:100%; min-height:850px;'></iframe>";
+	echo "<iframe src='$url' style='width: 100%; height: 100%; min-height: 750px;' frameborder='0'></iframe>";
 	echo '</div>';
 }