This solved my issue too, I was on v6.5.0 Update 3 Patch 03, I just went and updated 6 hosts did some reboots, and this popped up on 1 of my UCS blades. Clearing SEL worked, but I've had this up for almost 2 years and have NEVER seen this..... why am I just now getting that alert today? I looked at our other 7 blades, and all had similar entries in SEL log (normal events) so not sure why clearing it for this 1 blade solved it.... Yet the other blades have never received this alert.....
This was a awesome find, didn't think I would find a article so quickly to resolve this :smileyhappy:
UPDATE: I looked at UCS Manager, and noticed that nothing showed up in UCS Manager, when I looked at the UCS plugin inside of VMWare, I noticed the following: Log capacity on Management Controller on server 2/2 is very-low
I think this was what caused it, not sure if this helps anyone else but that looks to have been my issue.