--- loncom/xml/run.pm	2006/02/20 23:52:20	1.57
+++ loncom/xml/run.pm	2008/09/11 14:47:24	1.59
@@ -1,6 +1,6 @@
 package Apache::run;
 #
-# $Id: run.pm,v 1.57 2006/02/20 23:52:20 albertel Exp $
+# $Id: run.pm,v 1.59 2008/09/11 14:47:24 bisitz Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -78,7 +78,7 @@ sub evaluate {
     my $result = '';
     $@='';
     $Apache::run::timeout=0;
-    $main::SIG{'ALRM'} = sub {
+    local $main::SIG{'ALRM'} = sub {
 	$Apache::run::timeout=1;
 	die("timeout");
     };
@@ -116,7 +116,7 @@ sub run {
     my @result;
     $@='';
     $Apache::run::timeout=0;
-    $main::SIG{'ALRM'} = sub {
+    local $main::SIG{'ALRM'} = sub {
 	$Apache::run::timeout=1;
 	die("timeout");
     };
@@ -135,7 +135,7 @@ sub run {
 	}
 	my $errormsg='<pre>'.&HTML::Entities::encode($error,'<>&"').' '.
 	    &HTML::Entities::encode($innererror,'<>&"').
-	    '</pre> occured while running <pre>';
+	    '</pre> occurred while running <pre>';
 	$code=&HTML::Entities::encode($code,'<>&"');
 	if ($innererror=~/line (\d+)/) {
 	    my $linenumber=$1;