we have two servers, the first server runs since q2/2008 an was updated wih every systemupdate --> this server hast update 10.1.2a avalible

the second server runs since q4/2008 and there are 10.1.2 update

both servers run separate with two ZCM Zones...(old for test, new server live)
what is different?

today i have just update the old server wih 10.1.2a and the the webfrontend, after login, is white...

what can i do?