I am running into the same problem, did an in-place migration from esxi 4.1 to the latest 5.1 build on a DL-380 G6. Updated the HP firmware on everything in the server as well and now I am getting a "degraded" yellow exclamation point on the controller itself with no detail. While this server was sitting at 4.1 level there were no error indications on the array controller and WBEM was reporting everything correctly to both HP SIM and Orion. Here are my questions?
1) Is it safe to assume this is a cosmetic / spurious error?
2) Should I just wait it out for the next HP VIB files or make attempts to revert to older ones?
I guess I will open a ticket with HP and make some noise