st03N not showin the data only last 2 days

Hi experts,

in ST03n Tx last 2 days data not showing.

saposcol is running

SAP_COLLECTOR_FOR_PERFMONITOR--job executed every hour.

May be the issue in time zones????

because in system----status showing CET time whcih is 4,5 hrs back to the acutal time.

below the status ....

Previous logon 23.01.2012 11:35:45

Logon 11:37:33

System time 11:37:35

Time zone CET 07:07:35

Please give me the solution

Regards,