all,
our 2650xm router is configured to send syslog messages to cs-mars syslog server, but as i ran a report on mars, it didn't dispalyed any syslogs (but it did showed syslog on the local router). other routers are working perfectly and configured the same way as this one:
service timestamps debug datetime msec localtime
service timestamps log datetime msec localtime
logging buffered 4096 debugging
logging trap debugging
logging source-interface FastEthernet0/0
logging 10.40.4.10
ntp clock-period 17208004
ntp server 10.40.7.10
ntp server 10.40.1.21
ntp server 10.40.1.20