pppoe going blank...

hello all,

i would like to know if anyone can help me in this regard: within my winbox, my pppoe screen would just go blank and until around 10 mins later all the pppoe clients would show up with the time being in seconds. I would like to mention also that all other tabs within the pppoe screen disappears as well. that would be secrets, profiles, interface, active connections etc. I had originally downloaded and licensed the 5.7 version of routerOS and a friend suggested to download the newest version which is the 5.13 which i did. It is still doing the same thing regardless of this upgrade. Any help would be much appreciated.

thanks.

What is the CPU load of the Router ?

Also check /tool profile to see if any process is hogging the CPU