Hi, we have same problem as many others.
 
Like:
 
message:
Hardware Malfunction
Call your hardware vendor for support
NMI: Parity Check / Memory Parity error
The system has halted
 
log page:
System Event - PCI Parity Error detected
System Event - PCI System Error
 
we have
4x Poweredge2650 (only added audio pci card RME HDSP9652)
4x Poweredge2850 (dtto)
OS:MS2003
APP:realproducer11
 
Message appears on all servers unexpectedly (time period 1 week). Have You any idea why just dell Poweredge server does it? It's very important for us. Any suggest we're accepting. Thanks for help.