2 of 6 Domain Controller monitors not working.

Hi,

I have 6 DomainControllers which all are part of the same Domain and as far as I can tell, they are all setup in the same way.

However, the AD monitor on 2 of the servers won't work, They show N/A on most of the data.

The servers that work also have problems viewing some data like:
PDC Emulator NA Infrastructure Master NA RID Master NA Domain Naming Master NA Schema Master NA

I have attached 2 screenshots of one DC that almost works (sec-dc) and one that does not work at all. (pri-dc)

I should mention that the regular CPU, Memory and harddisk monitors works like a charm on all the DomainControllers.

Also I use version 7004 and the Premium edition.