diff --git a/pandora_agents/ChangeLog b/pandora_agents/ChangeLog
index 8d09d0c783..49dcc76888 100644
--- a/pandora_agents/ChangeLog
+++ b/pandora_agents/ChangeLog
@@ -1,3 +1,11 @@
+2011-09-01  Sancho Lerena <slerena@artica.es>
+
+	* unix/plugins/grep_log,
+	shellscript/linux/plugins/grep_log: Restored previous code because
+	it needs to start searching on the last position known. First time
+	plugin starts, seek to the final position to avoid fire old events
+	detected in the log. Plugin only gives new events once starts to work
+
 2011-08-31 Juan Manuel Ramon Vigo <juanmanuel.ramon@artica.es>
 
 	* unix/plugins/grep_log
diff --git a/pandora_agents/shellscript/linux/plugins/grep_log b/pandora_agents/shellscript/linux/plugins/grep_log
index 2a5aa86a95..2cf32474bd 100755
--- a/pandora_agents/shellscript/linux/plugins/grep_log
+++ b/pandora_agents/shellscript/linux/plugins/grep_log
@@ -168,8 +168,8 @@ sub parse_log () {
 	open(LOGFILE, $Log_file) || error_msg("Error opening file $Log_file: " .
 	                                     $!);
 
-	# Go to starting position
-	seek(LOGFILE, 0, 0);
+	# Go to starting position. 
+	seek(LOGFILE, $Idx_pos, 0);
 
 	print (stdout "<module>\n");
 	print (stdout "<name><![CDATA[" . $Module_name . "]]></name>\n");
diff --git a/pandora_agents/unix/plugins/grep_log b/pandora_agents/unix/plugins/grep_log
index 2a5aa86a95..2cf32474bd 100755
--- a/pandora_agents/unix/plugins/grep_log
+++ b/pandora_agents/unix/plugins/grep_log
@@ -168,8 +168,8 @@ sub parse_log () {
 	open(LOGFILE, $Log_file) || error_msg("Error opening file $Log_file: " .
 	                                     $!);
 
-	# Go to starting position
-	seek(LOGFILE, 0, 0);
+	# Go to starting position. 
+	seek(LOGFILE, $Idx_pos, 0);
 
 	print (stdout "<module>\n");
 	print (stdout "<name><![CDATA[" . $Module_name . "]]></name>\n");