Index: wp-admin/network/sites.php
===================================================================
--- wp-admin/network/sites.php	(revision 19577)
+++ wp-admin/network/sites.php	(working copy)
@@ -96,13 +96,11 @@
 							case 'spam':
 								$blogfunction = 'all_spam';
 								update_blog_status( $val, 'spam', '1' );
-								set_time_limit( 60 );
 							break;
 
 							case 'notspam':
 								$blogfunction = 'all_notspam';
 								update_blog_status( $val, 'spam', '0' );
-								set_time_limit( 60 );
 							break;
 						}
 					} else {